which of the following is not a characteristic of members of the domain archaea? answer unselected may be hyperthermophiles or extreme halophiles unselected cause disease in humans unselected carry out unusual metabolic processes unselected found in extreme environments sure i am sure lack peptidoglycan in cell walls

Answers

Answer 1

The characteristic that is not found in members of the domain archaea is the lack of peptidoglycan in their cell walls.

Archaea are single-celled organisms that have a distinct cellular structure from both bacteria and eukaryotes. They are found in a wide range of environments, from extreme hot springs to deep-sea vents, and are known for their ability to carry out unusual metabolic processes.

Some archaea, such as hyperthermophiles, thrive in extremely high temperatures, while others, like extreme halophiles, can tolerate highly saline conditions. Despite their ability to survive in harsh environments, archaea are not known to cause diseases in humans.

In fact, some archaea have been found to have potential benefits for human health, such as producing antibiotics and aiding in the digestion of food. Overall, the lack of peptidoglycan in the cell walls of archaea sets them apart from bacteria and is a key characteristic of this domain.

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Related Questions

What would the three amino acids be for this dna template: tacgatacc

leu-met-trp
met-leu-stop
trp-leu met
o met-leu trp

Answers

The three amino acids for this DNA template are Methionine, Leucine, and Tryptophan i.e. met-leu-stop.

To provide you with the correct amino acids for the given DNA template, I first need to identify the correct DNA sequence. It appears that there are some irrelevant terms in the provided sequence. Let's clean it up:

Corrected DNA sequence: TAC GAT ACC

Now, we can determine the amino acids by translating the DNA sequence into its corresponding mRNA sequence and then identifying the appropriate amino acids.

mRNA sequence: AUG CUA UGG

Amino acids: Methionine (Met) - Leucine (Leu) - Tryptophan (Trp)

So, the three amino acids for this DNA template are Methionine, Leucine, and Tryptophan.

It's important to note that the process of translation involves reading the mRNA sequence in sets of three nucleotides called codons. Each codon corresponds to a specific amino acid, as determined by the genetic code.

The start codon (AUG) initiates the translation process, and the subsequent codons code for specific amino acids until a stop codon is reached, indicating the end of protein synthesis.

So, therefore, the three amino acids for this DNA template are Methionine, Leucine, and Tryptophan i.e. met-leu-stop.

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What would the three amino acids be for this DNA template (tacgatacc)?

leu-met-trp

met-leu-stop

trp-leu met

o met-leu trp

Describe the function of each organelle
Golgi apparatus

Answers

The Golgi apparatus plays a significant role in protein synthesis by accepting proteins from the rough endoplasmic reticulum before subjecting them to important modification procedures. In addition, it sorts and packages these proteins before ultimately excreting them from the cell for further usage.

What is the function of the Golgi apparatus?

The Golgi apparatus, comprising of membrane-bound flattened sacs or cisternae, plays a vital role in protein and lipid processing, modification, and packaging.

Upon receiving proteins and lipids from the ER, it modifies them by adding or removing specific molecules. After modification, these molecules are further packaged into vesicles and transported to their designated cellular locations.

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Explain one abiotic condition in an ecosystem that might make eight beans the best suited for the environment 

Answers

Answer:

Abiotic condition: Temperature - Eight beans may be best suited for an environment with moderate temperatures (not too hot, not too cold).

Explanation:

chatgpt

A population of green-colored grasshoppers lives in a valley. Because of their body color the grasshoppers can hide in the green grass of the valley to avoid predators. Due to changes in average precipitation, the grass in the valley starts to turn brown. This
continues for several years. The green-colored grasshoppers are now easily visible to predators
Which characteristic would best allow the grasshopper population to adapt to this change?

A the ability to reproduce asexually.

B. the ability for the population to migrate.

C. genetic variation within the population.

D. a higher ratio of females to males in the population

Answers

The characteristic that would best allow the grasshopper population to adapt to the change in color of their environment is genetic variation within the population. Option C is correct.

This is because genetic variation increases the likelihood that some individuals in the population will have traits that make them better adapted to the new environment. For example, some grasshoppers may have genes for brown or tan coloration that allow them to blend in with the new color of the grass, and these individuals would be more likely to survive and pass on their genes to their offspring.

Asexually reproducing (Option A) may not necessarily increase the genetic variation within the population, making it harder to adapt to the changing environment. Migration (Option B) is not likely to help the grasshopper population in this case, as the same environmental conditions may exist in other regions. The ratio of females to males (Option D) does not necessarily affect the grasshoppers' ability to adapt to the new environment, as both genders may be equally impacted by the change in grass color. Hence Option C is correct.

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Xxx, xo, xyy, and xxy conditions are the result of.

Answers

XXX, XO, XYY, and XXY conditions are the result of chromosomal abnormalities.

Chromosomal abnormalities occur when there are changes in the number or structure of chromosomes in an individual's cells. These abnormalities can result in a range of conditions, including those listed in the question.

The XXX condition, also known as Triple X syndrome, occurs when an individual has three copies of the X chromosome instead of the typical two copies. This condition is usually not severe and may not cause any noticeable symptoms.

The XO condition, also known as Turner syndrome, occurs when an individual is missing one copy of the X chromosome. This can result in a range of symptoms, including short stature, infertility, and heart and kidney problems.

The XYY condition occurs when an individual has an extra copy of the Y chromosome. This condition is also usually not severe and may not cause any noticeable symptoms.

The XXY condition, also known as Klinefelter syndrome, occurs when an individual has an extra copy of the X chromosome. This can result in a range of symptoms, including infertility, developmental delays, and learning difficulties.

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Which hormone is absolutely necessary for ovulation to occur?.

Answers

The hormone necessary for ovulation to occur is luteinizing hormone (LH). LH is produced by the pituitary gland and plays a critical role in the female menstrual cycle. The surge of LH triggers the release of the mature egg from the ovary during ovulation.

LH levels rise rapidly just prior to ovulation and can be detected in blood and urine tests. Without LH, ovulation cannot occur, and pregnancy cannot be achieved. LH levels can be affected by various factors such as stress, illness, and certain medications.

Abnormal levels of LH can cause irregular menstrual cycles or infertility. Treatments such as hormonal therapies or assisted reproductive technologies may be used to regulate LH levels and support ovulation in individuals experiencing fertility issues.

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Why would it be better to be an r selected species if the water resources in an area were to become more limited over a short period of time

Answers

Answer:

R selected species are better equipped to survive environmental change because their quick population turn over can quickly adapt.

A change in dna has caused snail p to be very different from the other five snails




suggest why there might be an increasing number of snails similar to snail p in each future generation

Answers

The change in DNA of snail P may have led to a beneficial trait that provides an advantage in survival and reproduction, resulting in an increasing number of snails with similar characteristics in each future generation.

A change in DNA can occur due to a mutation or a genetic variation that alters the genetic makeup of an organism. In the case of snail P, this change in DNA has caused it to be very different from the other five snails. This difference can lead to a distinct phenotype that may provide some advantages to the snail, such as better adaptation to the environment or resistance to predators.

The presence of this advantageous trait can increase the likelihood of snail P surviving and reproducing, leading to an increasing number of snails similar to snail P in each future generation. This is because the advantageous trait will be passed down to its offspring and may become more common in the population over time through natural selection.

Additionally, if the snail P is able to mate with other snails with a similar genetic makeup, it can further increase the prevalence of the advantageous trait in the population. This phenomenon is called genetic drift, where a particular trait becomes more common in a population due to chance events.

In conclusion, the change in DNA of snail P may have led to a beneficial trait that provides an advantage in survival and reproduction, resulting in an increasing number of snails with similar characteristics in each future generation.

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Why does the dna re-zip closed when the mrna is done being made?

Answers

The process of DNA replication involves the separation of the double helix strands and the creation of new complementary strands.

When the mRNA is being transcribed from the DNA, the enzyme RNA polymerase moves along the template strand of DNA, unwinding the double helix and creating a single-stranded RNA molecule. However, once the mRNA molecule is complete, the RNA polymerase enzyme and associated proteins dissociate from the DNA template strand and the DNA double helix reforms.

The re-zipping of the DNA double helix is facilitated by the complementary base pairing of the nucleotide bases adenine (A) with thymine (T) and guanine (G) with cytosine (C). These base pairs create hydrogen bonds that hold the two strands of the DNA double helix together. When the RNA polymerase and associated proteins are no longer bound to the DNA template strand, the complementary base pairing of the nucleotides allows the two strands to come back together and form a stable double helix structure.

In summary, the re-zipping of the DNA double helix after mRNA transcription is complete is due to the complementary base pairing of the nucleotide bases, which creates hydrogen bonds between the two strands of the DNA molecule.

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The Braeburn apple is grown for its burst of sweet and tart flavors when bitten into, and for its firm fruit suitable for shipping. It was


named from the orchard where they were first grown. A chance seedling (young plant) was produced from what was thought to be a


cross-pollination of Granny Smith apples and Lady Hamilton apples. Explain which seeds would most likely reproduce this fruit.

Answers

In order to reproduce this fruit, both parent varieties must be present in the orchard. Since the Lady Hamilton apple is a variety of Golden Delicious, the seeds created by cross-pollinating these two apples will most likely produce a Braeburn-type apple.

The seeds produced by the cross-pollination of these two apples will contain a combination of the genetic material from the two parent varieties. This means that the Braeburn apples produced from the seeds will contain characteristics from both the Granny Smith and Lady Hamilton apples.

The seeds may also contain genetic traits from other apples that were grown in the same orchard, resulting in a unique combination of flavors, textures, and colors. In order to ensure that the Braeburn apple is reproduced, it is important to keep the two parent varieties in the orchard and to regularly cross-pollinate the trees.

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Which set contains the most closely related terms?.

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The set that contains the most closely related terms is option C, which includes the terms megasporangium, megaspore, egg, and ovule. These terms are all related to the process of plant reproduction and specifically to the female reproductive structures of plants.

Megasporangium is the structure within the ovule that produces the megaspore. The megaspore then develops into the female gametophyte, which contains the egg. The ovule is the structure that contains the female gametophyte and is eventually fertilized by the male gametophyte, or pollen, to form a seed.

Option A includes the terms microsporangium and microspore, which are related to male reproductive structures, and egg and ovary, which are related to female reproductive structures. Carpels are also a part of the female reproductive system, but are not directly related to the other terms in the set.

Option B includes microsporangium, microspore, and ovary, which are all related to the female reproductive system, but carpel is again not directly related to the other terms.

Option D includes megasporangium and megaspore, which are related to the female reproductive system, and ovule, which is the structure that contains the female gametophyte. However, pollen is related to the male reproductive system and is not directly related to the other terms in the set.

Therefore, option C contains the most closely related terms in terms of plant reproduction and specifically the female reproductive structures.

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Complete question is:

Which set contains the most closely related terms?

A) microsporangium, microspore, egg, ovary

B) microsporangium, microspore, carpel, ovary

C) megasporangium, megaspore, egg, ovule

D) megasporangium, megaspore, pollen, ovule

how long does it take for sperm to reach the egg while ovulating?

Answers

It generally takes sperm about 15 to 45 minutes to reach the egg while ovulating. However, the exact time it takes can vary depending on factors such as the health and mobility of the sperm, the distance the sperm has to travel, and the timing of ovulation.

Sperm can survive for up to five days inside the female reproductive tract, but the egg is only viable for about 24 hours after ovulation, making timing critical for successful fertilization.

Once the sperm reaches the egg, it must penetrate the outer layer of the egg known as the zona pellucida.

This process involves the release of enzymes by the sperm to break down the zona pellucida, allowing the sperm to fuse with the egg and release its genetic material. This process is called fertilization and marks the beginning of pregnancy.

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Jerry is trying to classify cells by their physical characteristics. He discovers a multicellular organism containing cells that have a nucleus and a cell wall as well as the ability to conduct photosynthesis. Into which of the three domains would this organism most likely fit?
A. Archaea
B. Archaea
C. Eukarya
D. Viral

Answers

The multicellular organism containing cells that have a nucleus and a cell wall as well as the ability to conduct photosynthesis would most likely fit into the domain Eukarya.

Eukarya is one of the three domains of life, and includes all organisms that have eukaryotic cells, which are characterized by the presence of a nucleus and other membrane-bound organelles. This domain includes a wide range of organisms, including animals, plants, fungi, and protists. The presence of a cell wall and the ability to conduct photosynthesis would suggest that this organism is a plant or algae, both of which fall under the domain Eukarya.

what contributes to antigenic shift in influenza viruses? group of answer choices ease of virus transmission a segmented genome worldwide distribution of the virus different virus subtypes attachment spikes

Answers

The option that contributes to antigenic shift in influenza viruses is different subtypes, the correct option is E.

Antigenic shift occurs when two different subtypes of influenza A virus infect the same host and exchange genetic material through a process called reassortment. This can happen in animals or humans, and it results in the creation of a new strain of influenza virus with a novel combination of surface proteins.

The segmented genome of influenza viruses and their attachment spikes also play a role in antigenic shift, but the primary factor is the presence of different subtypes. Worldwide distribution and ease of transmission contribute to the spread of the virus but are not directly involved in the process of antigenic shift, the correct option is E.

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The complete question is:

What contributes to antigenic shift in influenza viruses?

A) Worldwide distribution

B) Segmented genome

C) Attachment spikes

D) Ease of transmission

E) Different subtypes

biology diagram. match each process to where it occurs in the CARBON CYCLE. what goes where.

Answers

Answer: See image below

Explanation:

Animals, burning of fossil fuels and photosynthesis all release carbon. Plant respiration takes in carbon and fossil fuels are made from decayed, fossilized plants and animals.

Learning Task 1: Let's Compare.
Directions:
1. Study carefully the sequence of the amino acid.
2. Given are the sequence of amino acids in the cytochrome C of the human, chimpanzee, gorilla,
Rhesus monkey, horse, and kangaroo.
Note: Cytochrome C is a respiratory enzyme located inside the mitochondria.
3. Identify the differences using the amino acid sequence of human as
reference. Refer to table 1 for your answer.
4. Supply the missing amino acid sequence of chimpanzee, gorilla, Rhesus
monkey, horse, and kangaroo to complete Tables 2, 3, and 4 in a separate sheet of paper.
5. Complete Table 5 to show the number of amino acid differences and the position which they vary,​

Answers

The sequence of the amino acids in the cytochrome C of the humans, chimpanzee, gorilla, rhesus monkey, horse and kangaroo is as follows:

1. First, study the amino acid sequence of human cytochrome C carefully, as it will serve as your reference for comparison.

2. Obtain the amino acid sequences of cytochrome C for the other species (chimpanzee, gorilla, Rhesus monkey, horse, and kangaroo). You can usually find these sequences in scientific databases or textbooks.

3. For each species, compare their cytochrome C sequence with the human sequence. Identify the positions at which the amino acids differ from the human sequence.

4. To complete Tables 2, 3, and 4, fill in the missing amino acid sequences of chimpanzee, gorilla, Rhesus monkey, horse, and kangaroo. You can use the information you gathered in step 2 for this purpose.

5. Finally, to complete Table 5, note down the number of amino acid differences for each species and the positions at which they vary from the human sequence.

By following these steps, you should be able to successfully compare the cytochrome C amino acid sequences of these species and understand the differences between them.

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This echidna, this capuchin and this bottlenose dolphin similarities and differences in their body structures. what does the information about these structures tell you about the ancestors of these species?​

Answers

Echidnas, capuchin monkeys, and bottlenose dolphins are all very different animals with distinct body structures. While they share some similarities, such as being vertebrates with four limbs, there are also many differences between them.

One major difference is that echidnas are monotremes, which means they lay eggs, while capuchin monkeys and bottlenose dolphins are placental mammals, which means they give birth to live young. Echidnas have a beak-like snout that they use for digging, while capuchin monkeys have prehensile tails and opposable thumbs that they use to manipulate objects. Bottlenose dolphins have streamlined bodies and a dorsal fin that they use for propulsion and stability while swimming.

Overall, the similarities and differences in the body structures of echidnas, capuchin monkeys, and bottlenose dolphins provide insight into their evolutionary history and adaptations to their respective environments. While these species may appear very different on the surface, they are all part of the larger tree of life and share a common ancestry.

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Cyanobacteria have been genetically modified to produce _______. a. oil b. natural gas c. isobutanol d. none of the above please select the best answer from the choices provided a b c d

Answers

Answer:

C. Isobutanol.

Explanation:

Cyanobacteria have been genetically modified to produce isobutanol.

Cyanobacteria have been genetically modified to produce isobutanol. The answer is c.

Cyanobacteria, also known as blue-green algae, are a group of photosynthetic bacteria that have the ability to produce biofuels. Isobutanol is a type of biofuel that is produced by modifying the metabolic pathways of cyanobacteria.

Isobutanol is considered to be a promising alternative to traditional gasoline because it has a higher energy content and is more compatible with existing gasoline infrastructure. In addition, isobutanol is less volatile and less corrosive than ethanol, which is another biofuel that is commonly produced from corn and other crops.

By genetically modifying cyanobacteria to produce isobutanol, researchers hope to develop a sustainable and environmentally friendly source of fuel that can help reduce our reliance on fossil fuels.

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Explain how animals are selected for breeding.

Answers

Answer:

Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields.Jul 21, 2021

Explanation:

PLS MARK BRAINLIEST

crops and breeeds aren’t the way to go so eta a shower and your done

how long does it take for sperm to reach the egg while ovulating15 to 45 minutes16 to 45 minutes17 to 45 minutes18 to 45 minutes

Answers

Answer:

Explanation:

Usually, sperm reaches the egg within 15 to 45 minutes of ejaculation . However, the process could be much longer than that if you haven’t ovulated yet by the time you have sex, because sperm can live inside a reproductive tract and wait for an egg for up to five days .

For the given question "How long does it take for sperm to reach the egg while ovulating?". The correct answer is none of the above.

Contrary to popular belief, it actually takes sperm much longer to reach the egg after ejaculation during ovulation. On average, it takes sperm about 6-10 hours to reach the fallopian tube where fertilization occurs.

However, sperm can survive inside the female reproductive tract for up to 5 days, so it's possible for fertilization to occur if intercourse takes place up to 5 days before ovulation.

Several factors can affect the time it takes for sperm to reach the egg, including the health and motility of the sperm, the consistency of cervical mucus, and the timing of intercourse relative to ovulation.

It's important to note that pregnancy is not guaranteed even if sperm successfully reach the egg, as there are many other factors that can affect fertilization and implantation.

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Brown eyes are dominant to blue eyes. What is the probability a father who is heterozygous for eye color and a mother with blue eyes will have an offspring with blue eyes?

Answers

Answer:

25%

Explanation:
If the father is heterozygous for eye color, then he has one dominant brown allele and one recessive blue allele. The mother has blue eyes, so she must have two recessive blue alleles.

When these parents have a child, each parent randomly contributes one allele to the offspring. There are four possible combinations of alleles for the offspring: BB (brown eyes), Bb (brown eyes), bB (brown eyes), and bb (blue eyes).

To determine the probability of the offspring having blue eyes, we need to look at the possible combinations that result in blue eyes. The only way for the offspring to have blue eyes is if they inherit the recessive blue allele from both parents, which can only happen if the father contributes his recessive blue allele (b) and the mother contributes her recessive blue allele (b).

The father has a 50% chance of passing on the recessive blue allele, and the mother will always pass on a recessive blue allele. Therefore, the probability of the offspring having blue eyes is:

1/2 (chance of father passing on b allele) x 1/2 (chance of mother passing on b allele) = 1/4

So the probability of the offspring having blue eyes is 1/4 or 25%.

which of the following structes of the plant are a tipical found

Answers

An action potential is an electrical signal propagated along the membrane of a neuron. During an action potential, the membrane of the neuron depolarizes and then repolarizes.

Repolarization occurs as a result of a change in the ion channels of the neuron. During depolarization, voltage-gated sodium channels open allowing sodium ions to enter the neuron, making the inside of the neuron more positive than the outside.

This change in voltage causes voltage-gated potassium channels to open, allowing potassium ions to exit the neuron. As the potassium ions leave, the inside of the neuron becomes less positive than the outside, resulting in the repolarization of the membrane.

The repolarization of the membrane is complete when the ion channels close. The ion channels close when the resting potential of the neuron is restored. The action potential is then reset, allowing the neuron to fire again.

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At a haunted house, a child sees someone hiding behind some furniture. The child begin to sweat and feel his heart might beat out of his chest from the adrenaline rush. Which body systems are interacting in this scenario?

Three right answers

A. Reproductive and immune
B. Skeletal and digestive
C. Nervous and endocrine
D. Muscular and excretory
E. Circulatory and respiratory

Answers

The three body systems that are likely interacting in this scenario are:

C. Nervous and endocrineE. Circulatory and respiratoryD. Muscular and excretory

What is the fight or fight response?

The fight or flight response is a physiological response that occurs automatically in response to a stressful or frightful experience. Threat perception engages the sympathetic nervous system, causing an acute stress reaction that primes the body for either fighting or running away.

During the fight or flight response, the  body systems interacting are as follows:

Nervous systemendocrine systemskeletal system, andmuscular system

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Describe the process of succession using the 6 steps from the video.

Answers

In biology, succession refers to the process of change in the species structure of an ecological community over time.

How does succession happen ?

There are two forms of succession: primary and secondary. Primary succession commences in regions where there is barren soil, for instance, on bare rock or sand. This form starts with the colonization of pioneer species like mosses and lichens which help erode the surface, gradually creating favorable soil conditions. As a result, other animals and plants can move into the area to establish themselves.

Secondary succession, however, takes place in areas already habited by organisms - disturbed or ruined due to external factors such as wildfire, floods, and human interaction; thereby imposing substantial ecological modifications.

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What is found inside of ice core samples that scientists use to determine the composition of the atmosphere at the time the ice was formed?

question 14 options:

microbes


dust particles


ions


gas bubbles

Answers

Inside ice core samples, scientists use gas bubbles to determine the composition of the atmosphere at the time the ice was formed.

These gas bubbles contain trapped air from the past, providing valuable information about the historical atmosphere.

Ice core sampling involves drilling into ice sheets or glaciers to extract long cylindrical sections of ice cores. These ice cores can reach depths of several kilometers and contain layers of ice representing different periods in history, often spanning thousands or even hundreds of thousands of years.

The gas bubbles present in these ice cores are small pockets of air that were trapped within the ice at the time of its formation. These bubbles preserve a snapshot of the atmospheric composition, capturing the gases present in the Earth's atmosphere during that particular period.

The composition of these gas bubbles can be analyzed to reveal the past concentrations of various atmospheric components.

To extract the gases from the ice cores, scientists use a variety of techniques, including melting, crushing, or sublimating the ice samples.

Once the gases are released, they can be analyzed using specialized instruments such as gas chromatographs or mass spectrometers.

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A particular maize plant with a mutation in the allele encoding the large subunit of rubisco is crossed with a plant that contains the normal allele. explain how examination of the offspring will enable a researcher to determine whether the mutant plant contributed the ovule or the pollen to the cross.\

Answers

When a maize plant with a mutation in the allele encoding the large subunit of rubisco is crossed with a plant that contains the normal allele, examination of the offspring can enable a researcher to determine which parent contributed the ovule or the pollen to the cross.

By examining the offspring, the researcher can determine if the mutant allele is present in the offspring, and from there, can determine which parent contributed the ovule or the pollen. If the offspring have the mutant allele, then the mutant plant contributed the ovule, as it is the maternal parent, and the allele is inherited through the egg.

If the offspring do not contain the mutant allele, then the mutant plant contributed the pollen, as the allele is not inherited through the sperm. In order to determine the allele present in the offspring, the researcher can use a variety of techniques, such as DNA sequencing, to examine the offspring's genome and determine which alleles are present.

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what causes less competition
A. different reproductive habits of species
B. greater day/night temperature differences
C. greater differences between niches

Answers

Answer:

c

Explanation:

C. greater differences between niches.

A greater difference between niches results in less direct competition for resources. When species occupy different niches, their roles in the environment do not overlap significantly, and they can coexist with less interspecific competition. In contrast, if species have similar niches, they are in direct competition with each other, leading to reduced population sizes and potential extinction.

Different reproductive habits of species and greater day/night temperature differences have no direct effect on competition.

1) Identify 4 stimuli that causes a decrease in the number of producers, consumers, and decomposers living in an area.



2) What could be the effects in relationship to the energy pyramid, population and community of organisms within the environment

Answers

1. The four stimuli are pollution, habitat destruction, over-harvesting. and climate change. 2. Decrease in producers, consumers, and decomposers affects the energy pyramid, populations, and communities in an environment.

1. Pollution: high levels of pollutants can be toxic to organisms, leading to illness or death.

Habitat destruction: destruction of natural habitats can result in a loss of biodiversity and a decrease in the number of organisms that can live in the area.

Over-harvesting: excessive harvesting of resources can lead to a decline in the populations of the species being harvested, as well as those that depend on them.

Climate change: changes in temperature and precipitation patterns can alter the availability of resources, making it difficult for organisms to survive.

2. The effects of a decrease in the number of producers, consumers, and decomposers can have a significant impact on the energy pyramid, population, and community of organisms within an environment.

With fewer producers, there will be less energy available to support higher trophic levels, leading to a decrease in the populations of consumers and decomposers. This, in turn, can lead to a decline in the overall biodiversity of the community, as well as a decrease in the stability of the ecosystem.

The effects can also be felt further up the food chain, with organisms that depend on the affected species experiencing declines in their own populations.

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A drug contains an ionized carboxylate group and shows good activity against its target in in-vitro tests. When in vivo tests were carried out, the drug showed poor activity when it was administered orally, but good activity when it was administered by intravenous injection. The same drug was converted to an ester, but proved inactive in vitro. Despite that, it proved to be active in vivo when it was administered orally. Explain these observations

Answers

These findings emphasize the need of taking a drug's characteristics and administration method into account when determining its efficacy. The structural changes that can occur during drug development can have a substantial impact on the qualities of the medicine and may need to be carefully assessed to guarantee optimal activity.

The ionized carboxylate group in the original drug molecule is likely responsible for its poor oral bioavailability. This means that the drug is not easily absorbed into the bloodstream when taken orally, leading to reduced activity in vivo. However, when the drug is administered intravenously, it bypasses the absorption step and can quickly reach its target site, resulting in good activity.

When the drug is converted to an ester, it undergoes a structural change that alters its properties. This change may have affected the drug's ability to interact with its target in vitro, resulting in reduced activity. However, when the ester is administered orally, it may be more easily absorbed into the bloodstream due to its altered properties, leading to good activity in vivo.

Overall, these observations highlight the importance of considering a drug's properties and administration route when assessing its efficacy. The structural changes that can occur during drug development can have significant impacts on a drug's properties and may need to be carefully evaluated to ensure optimal activity.

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do prokaryotic organisms have simple dna

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Answer:

Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome, of circular DNA

Explanation:

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