What is the function of the seed coat ?
• it protects the new plant.
• it contains food.
• it performs respiration.
• it attracts animals.
Answer:
It protects the new plant.
Some fish have bony fins. If the body of water they are in dries out, these fins can be used to help the fish "walk" to another body of water. In this context, bony fins are an example of ________. A) an exaptation B) an adaptation C) a macroevolutionary event D) pedomorphosis
Answer:
A) an exaptation
Explanation:
A cell has two pairs of submetacentric chromosomes, which we will call chromosomes IA, IB, IIA, and IIB (chromosomes IA and I B are homologs, and chromosomes IIA and IIB are homologs). Allele M is located on the long arm of chromosome IA and allele m is located at the same position on chromosome IB. Allele P is located on the short arm of chromosome IA, and allele p is located at the same position on chromosome IB. Allele R is located on chromosome IIA and allele r is located at the same position on chromosome IIB.
A. Draw these chromosomes, identifying alleles M, m, P, p, R, and r as they would appear in metaphase I of meiosis. Assume there is no crossing over.
B. Taking into consideration the random separation of chromosomes in anaphase I, draw the possible types of gametes that might result from this cell’s undergoing meiosis. Assume that there is no crossing over.
Answer:
A) Allelic position in the chromosomes:
IA ----------M------------:-----------P----
IB ----------m------------:-----------p----
IIA -----------------R--------------------:---------------------
IIB -----------------r---------------------:---------------------
B) Types of gametes (assuming there is no crossing over):
MPR; MPr; mpR; mpr.
Explanation:
In submetacentric chromosomes, the centromere is located near to the middle of the chromosomes.
Since these two pairs of homologous chromosomes do not undergo crossover, the resulting gametes after meiosis may have four (4) allele combinations.
time._______________
is the relative temperature of a region over
O C. rain pattern
O B. climate
O A. weather
O D. wind currents
Answer: choice B. Climate
Explanation:
Climate is the relative temperature of a region over time.
Type the correct answer in the box. Spell all words correctly.
What is the correct term for splitting an atom to release nuclear energy?
Splitting the nucleus of an allom to release energy is referred to as nuclear
Answer:
The splitting of a uranium atom releases energy. This process is called “nuclear fission”, since the centre of an atom is called its nucleus. When a uranium atom splits it gives off more neutrons, which can then split more atoms, and so the energy level rapidly multiplies
Explanation:
The splitting of a uranium atom releases nuclear energy by the process called nuclear fission, releases more neutrons, which can then split atoms, and energy level multiply rapidly.
What is nuclear energy ?The Energy is stored in the core of atom called nuclear energy.
The mass of an atom refers to the mass of nuclear elements like total mass of neutron and proton present in it.
Nuclear reaction can either be nuclear fission or fusion which releases the nuclear energy.
The process in which atoms combine to form a larger atom called nuclear fusion, while the process in which the the breakdown of atoms with the release of energy called nuclear fission.
Nuclear power plants produce energy by nuclear fission where as Sun produces energy by nuclear fusion.
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The maximum water vapor that air can hold at 30°C is about 30 grams/cubic meter. If the humidity of the air is currently 6 grams/cubic meter at
the same temperature, the relative humidity is %.
Answer:
20%
Explanation:
6 ÷ 30 × 100
1÷5 × 100
20%
List 3 areas other than pregnancy and childbirth where genetic counselors provide help.
Which correctly lists the three processes that are affected by freeze and thaw cycles?
O creep, landslide, and deposition
O deposition, creep, and weathering
O landslide, slump and deposition
O slump. weathering, and creep
Answer:
Slump creep and weathering
Explanation:
Freeze-thaw weathering occurs when water from rainfall or melt snow penetrate into cracks and the temperature is lowered than a liquid and freeze. The process where exposed rock is broken. It gives the landscape a new shape.
When the freeze occur it expands the rock and when the temperature increases above freezing the thaw ice further penetrate into the crack.
Weathering the breaking down of rock into smaller frequent affects freeze-thaw as it allows water to penetrate into cracks.
Slump is the downward movement of materials from rock surface, it allows material to move alone the rock surface liquid such as water can be allowed to move and penetrate cracks. crack rock fragment that results from freeze thawing are deposited at rock base and form smaller rocks
Creep is also the movements of weathered materials down the slope of rock surfaces. It could result from freeze thaw.
Answer:
d
Explanation:
All animals need food to survive. Which of these is a use for food? A. growth B. motion C. body repair D. all of these
Answer:
D
Explanation:
The food that animals need to survive is constructed into energy that is used for
growth
ex. humans getting taller
motion
ex. energy to run
body repair
ex. repairing ripped tissues
What effect does the sun have on surface water?
Answer:
it evaporates it and makes the water cycle work
Explanation:
The sun has several effects on surface water. It causes evaporation, converting water into vapor and contributing to the water cycle.
The effect of tghe sunThe sun's heat regulates water temperature and supports photosynthesis in aquatic plants, which produce oxygen and serve as food sources.
Solar energy drives surface water circulation and influences biological activity, promoting biodiversity in water bodies.
Overall, the sun plays a vital role in the dynamics and functioning of aquatic ecosystems.
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Conduct research to find something interesting that proves protists are necessary.
Answer:
The slime molds are important to ecosystems because they act as decomposers which will release nutrients back into the environment. Earth basically depends on protists because they supply oxygen and are critical in the food chain.
Shortly after a stream dried up, you noticed a change in the field mouse population coat color variation. When the stream was flowing, there were two populations, one with darker coats and one with lighter coats. After the stream dried up, mice with darker coats were being born into the lighter coat population and vice versa.
a. True
b. False
Answer:
a. True
Explanation:
When the stream dried up darker coat mice were seen into the lighter coat population and vice versa because of the natural selection process.
Mice change their coat color by adapting the changes in the stream flow and evolve their coat either dark or light that provides camouflage so predators won’t see them and they are able to survive in the environment. Mice have the advantage of surviving long and they are able to pass their genes to the offspring.
Hence, the given statement is true.
What hormones are produced by the anterior pituitary?
Answer:
The following hormones are secreted
Explanation:
Adrenocorticotrophic hormone (ACTH)
Thyroid-stimulating hormone (TSH)
Luteinising hormone (LH)
Follicle-stimulating hormone (FSH)
Prolactin (PRL)
Growth hormone (GH)
Melanocyte-stimulating hormone (MSH)
Caregiving has been associated with:____________
a) a stronger immune response.
b) a higher percentages of T cells.
c) underproduction of proinflammatory cytokines.
d) overproduction of proinflammatory cytokines.
Which phase the cell cycle would the cell stop in if you disrupted:_______.
1. the protein DNA polymerase S phase.
2. the depolymerization of the microtubules metaphase.
3. the polymerization of actin cytokenesis.
4. the protein ligase S phase.
5. the chiasmata formation.
The interphase (G1, S, and G2 phases) precedes meiosis (Meiosis 1 and meiosis 2). Immediately after meiosis, cytokinesis occurs.
1: S phase / 2: Anaphase 1 and 2 / 3: cytokinesis / 4: S phase / 5: Prophase 1.
---------------------------------
The interphase occurs before cell division. It is composed of the G1, S, and G2 stages.
During the S stage occurs the DNI replication process. At this point, also happens the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.
Among the enzymes involved in the DNA replication process, two of them are
DNA polymerase III• Responsible for DNA elongation by adding nucleotides to the growing chain, from 3' to 5' extremes.
• It includes only nucleotides that complement the original strand.
• They need to recognize a primer to begin.
DNA polymerase I eliminate ARN primers and substitute them with DNA. DNA ligase seals the gaps that remain after replacing the primers by reestablishing phosphodiester bonds. They also bind the Okasaki fragments during the discontinuous strain synthesis.1. the protein DNA polymerase >>>>>>> S phase.
4. the protein ligase >>>>>>> S phase.
****************************************************
Through Meiosis, a diploid cell (2n) produces four haploid daughter cells (n).
After DNA replication there are two meiotic phases.
The first one is a reductive phase, in which homologous chromosomes separate. In the second phase, the cell suffers a new, not reductive division.During prophase 1 of meiosis, each chromosome carefully pairs with its homologous chromosome.
Crossing-over is the interchange of genetic information between two homologous chromosomes, making the daughter cells genetically different from the original one.
The point where the interchange of genetic information occurs is the chiasma.
5. the chiasma formation >>>>>>> propahase I
****************************************************
Antiparallel microtubules between the separating chromosomes compose the spindle apparatus.
These fibers get elongated during the anaphase, while chromosomes or chromatids migrate to the opposite poles of the cell.
The depolarization of the microtubules drives the chromosomes or chromatids to segregate during the anaphase.
2. the depolymerization of the microtubules >>>>>> anaphase I and II
****************************************************
Actin is a globular protein. Actin filaments are composed of the polymerization of the protein.
Among their many functions, actin polymers are involved in cytokinesis.
The final strangulation of the cytoplasm during the division process occurs through the organization of actin filaments.
Filaments form a ring structure, which progressively narrows its diameter until the complete separation of the two daughter cells.
3. the polymerization of actin >>>>>>> cytokenesis
*******************************
1. the protein DNA polymerase >>>>>>>>> S phase.
2. the depolymerization of the microtubules >>>>>>>>> anaphase I and II.
3. the polymerization of actin >>>>>>>>> cytokenesis.
4. the protein ligase >>>>>>>>> S phase
5. the chiasmata formation >>>>>>>>>>> prophase I
-----------------------------------------
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Which puppy might have been placed into this litter by mistake
Which is an example of the way matter cycles through the bodies of living
things?
A. Salmon swimming in a river
B. Salmon eating shrimp
C. Shrimp swimming in the ocean
D. People watching salmon
SUBMIT
Why do you find glucose in the filtrate but not formed elements of the blood (erythrocytes, leukocytes, and
platelets)?
Answer:
Formed elements of the blood are too large to fit through the filtration slits of the filtration membrane. ... Nephron tubules cannot reabsorb large proteins and cells that enter the filtrate.
Which describes a eukaryotic cell, but not a prokaryotic cell? a. uses DNA to control cell activities b. is surrounded by a cell membrane c. makes and uses proteins d. contains DNA in a nucleus
Answer: Eukaryotic cells are larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes.
So..the answer should be D. Eukaryotic cells have a true membrane-bound nucleus and prokaryotes do not
All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.
So..it can't be C. or A. or even B.
Correct me if I'm wrong.
Arrange the followings so that they accurately display the anatomical terms from bottom to top in order of the deepest to most superficial.
a. hair shaft
b. hair bulb
c. dermal papilla
d. hair root
e. hair matrix
Answer:
The correct arrangement from starting with the one at the bottom and/or deepest to the most obvious to the eye is:
E) Hair Matrix (Deepest)
C) Dermal Papilla
B) Hair Bulb
D) Hair Root
A) Hair Shaft (Most superficial)
Cheers!
supplies the diaphragm
Answer:
what?.................
Answer:
phrenic nerve.
Explanation:
Inferior phrenic arteries are closely related to the diaphragm and give off a few branches to supply it. They are the main source of vascular supply to the diaphragm. The left inferior phrenic artery ascends toward the left diaphragmatic crus associated with the inferior surface of the diaphragm.
Lana was walking down the sidewalk looking at her phone and didn't notice the curb ahead. As she tripped her ankle turned inward (inversion). She heard a pop and had pain on the lateral side (outside) of her ankle and foot. Lana went to urgent care and was diagnosed with a 2nd degree lateral ankle sprain and fracture of her fibula (lateral bone in the lower leg). List all the types of tissues that have been affected by this injury. Which will likely heal slower, ligament or bone?
Answer:
ligament bcos ligament heal before bone
A ligament tear is an injury caused by an extreme motion, like a forceful twisting of a joint. A tear usually causes immediate pain and perhaps even a "pop" sound at the site of injury when it occurs. Depending on the severity of the injury, the affected site may become unstable.
What is Ligament?Ligaments are elastic bands of tissue that connect bones to each other and provide stability and strength to the joint. The four main ligaments in the knee connect the femur (thighbone) to the tibia (shin bone) and include the following: Anterior cruciate ligament (ACL).
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Which of the following is a benefit of globalization?
A. There is an increase in piracy of cargo ships in international
waters.
B. People do not usually venture far from where they were born.
C. Products can be flown to the other side of the world in less than a
day.
D. Advances in technology allow energy resources to produce less
pollution
Answer:
C
Explanation:
More products can ensure people have a normal life as others and everyone will benefit
The correct option about Globalisation is “Advances in technology allow energy resources to produce less pollution”.
What is Globalisation ?The integration between the world economic system and the domestic economic system is referred to as globalisation. In different words, it can be described as a technique related to developing openness, developing economic interdependence and deepening economic integration inside the world economic system.
Thus, we can conclude that Globalisation leads to advancement in technology and hence allow energy resources to produce less pollution.
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According to the calendar, it has been about 14 days since the beginning of the last lunar
cycle. Usually, the moon is bright white, but today a dark red moon hangs in the night sky.
What are you witnessing?
A. a northern light
B. a solar eclipse
C. a lunar perihelion
D. a lunar eclipse
Industrial melanism refers to the dark pigmentation that evolved in some insects giving them protective coloration on vegetation darkened by soot in heavily industrialized areas prior to air pollution regulation. Assume that in one heavily polluted area near Birmingham, England in 1956, 79% of the moths of the species Biston betularia were black due to the presence of a dominant gene for melanism. Estimate the frequency of the dominant allele in this population, and the proportion of black moths that are heterozygous.
Answer:
The frequency of the dominant allele, p = 0.542The proportion of black moths that are heterozygous 2pq = 0.496Explanation:
According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the allelic dominant or recessive forms. The genotypic frequencies after one generation are p² (Homozygous dominant), 2pq (Heterozygous), q² (Homozygous recessive). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.
In the same way, the sum of genotypic frequencies equals 1, this is
p² + 2pq + q² = 1
Being
p the dominant allelic frequency,q the recessive allelic frequency,p² the homozygous dominant genotypic frequencyq² the homozygous recessive genotypic frequency2pq the heterozygous genotypic frequencyIn the exposed example, 79% of the moths of the species Biston betularia were black due to the presence of a dominant gene for melanism.
If the genotypic frequency of back moths is 0.79, then, by performing the following equation we can get the not-black moths genotypic frequency:
p² + 2pq + q² = 1
where p² is the homozygous dominant genotypic frequency, q² the homozygous recessive genotypic frequency, and 2pq is the heterozygous genotypic frequency.
As 0.79 is the phenotypic frequency of black moths, then this frequency equals p²+2pq.
Clearing the equation:
p² + 2pq + q² = 1
0.79 + q² = 1
q² = 1 - 0.79
q² = 0.21
The genotypic frequency of non-black moths is 0.21. So, from here we can calculate the allelic frequency:
q² = 0.21
q= v 0.21
q = 0.458
If 0.46 is the allelic frequency of non-black moths, then by clearing the equation p + q = 1, we can get the p allelic frequency:
p + q = 1
p + 0.458 = 1
p = 1 - 0.458
p = 0.542
The genotypic frequency p² = (0.542)² = 0.294The heterozygote genotypic frequency2 x p x q = 2 x 0.542 x 0.458 = 0.496
Finally, we can check this answer by clearing the following equation:
p² + 2pq + q² = 1
0.294 + 0.496 + 0.21 = 1
The woman marked with a question mark is your friend. Knowing that you are taking Genetics, she comes to ask you for advice: she wants to have children, but is afraid that they will be sick with the disease. Her husband and her mother have no family history of HD. What is the probability that she is sick? What is the probability that her children will be, without knowing her own status regarding the disease?
Answer:
Explanation:
The woman with the question mark is not sure if she has the HD disease,
The mother had no history of the disease this means she is not a carrier of the disease but we are not sure of the fathers genotype.
If the father is a carrier in an homozygous dominant form(aa) and the mother does not have the disease her. gentotype is AA
A A ×aa
Aa Aa Aa Aa This means all their offspring will be Carrier of the disease because each parents contributes 50% of the gene their offspring is made of.
The probability that she is sick is 0% but she could be a carrot of the disease in an heterozygote form
If the woman who is a carrier (Aa)of the disease marries a man with no history of the disease(AA)
Aa ×AA
I
AA AA Aa Aa
The probation of their offspring being a carrier in heterozygous form is 50% while the probability of the offspring being dominant of the disease is 0%. Hence, she should not be afraid since her mother and husband who could have contributed to determining the gene of this offspring are not carriers of this gene the offspring are safe.
To determine if the substance in the first test tube
above is indeed a meat, you could also test it
using
Answer:
Biuret solution
Explanation:Just did the lab
Katie wants to make ball-and-stick models of the four macromolecules. She has colored balls for each of the elements in these molecules, including the following.
Answer:
I don't really understand what the question is, but I'm pretty sure you're asking for which molecules that will be needed; Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus
Explanation:
-Carbohydrate consists mainly of Carbon, Hydrogen, Oxygen, simple sugars have the basic formula of (CH2O)n. Some modification can be made to the sugar, but the main formula consists only with Carbon, Hydrogen, Oxygen.
-Proteins consists mainly of Carbon, Hydrogen, Oxygen, and Nitrogen for the amide groups. Some amino acid will need Sulfur for it's R Group.
-Fats consists mainly of Carbon, Hydrogen, and Oxygen just like Glucose.
-Nucleic Acids consists mainly of Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus for the backbone of the Nucleic Acid. Nitrogen will be needed for the Nitrogenous Base.
I hope this is the answer you're looking for!
Swamps can occur seasonally.
Answer:
If you are asking a true or false this is sometimes true with small swamps
Explanation:
Can I have a thanks 5 star and brainliest? Please tell me if i am reight!!!
Answer:Esta cobertura comprende las tierras bajas, que generalmente permanecen inundadas durante la mayor parte del año, pueden estar constituidas por zonas de divagación de cursos de agua, llanuras de inundación, antiguas vegas de divagación y depresiones naturales donde la capa freática aflora de manera permanente o estacional. Comprenden hondonadas donde se recogen y naturalmente se detienen las aguas, con fondos más o menos cenagosos. Dentro de los pantanos se pueden encontrar cuerpos de agua, algunos con cobertura parcial de vegetación acuática, con tamaño menor a 25 ha, y que en total representan menos del 30% del área total del pantano.
Distribución geográfica: Las zonas pantanosas se identificaron en las llanuras de inundación a lo largo de los ríos Caquetá, Caguán y Orteguaza y sus tributarios en el departamento del Caquetá; a lo largo del Río Guaviare en el norte de la región amazónica y en el río Vaupés en los departamentos de Guaviare y Vaupés.
Explanation:
What impact does the atmosphere have on the Earth's cycles? Select four options,
produces wind currents
transfers nitrogen from air to soil
transfers water into Earth's oceans
moves oxygen from volcanic eruptions for plants
moves oxygen and carbon dioxide through the biosphere?
Answer:
D
Explanation:
I think the atmosphere facilitates the distribution of oxygen and co2
Answer:
D
Explanation:
