Answer:
What factors were dealt with in your lab? otherwise factors that affect populations can range from abiotic factors like contaminated soil water and food from natural disasters and biotic factors like predators killing the organism or plants not producing the necessary nutrients for the food chain.
Explanation:
Paleontologists are scientists who study evidence of past life on Earth. Which method do paleontologists most likely use to determine the forms of life that existed millions of years ago?
A. Examine current species of plants and animals
B. examine current species of plants and animals
C. research past species in the library
D. interview older scientists
E. examine fossils records
Answer:
e
Explanation:
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What did the experiments of Griffith and Avery show about genetic information ?
Answer:
Griffith and Avery studied bacteria and mice. Their S and R experiment revealed that DNA stores and transmits genetic information from one generation of bacteria to another. Chromosomes consist of protein and DNA, but mainly DNA.
Explanation:
The experiments performed by Griffith and Avery showed that the genetic material which is being passed on from parents to offspring is DNA.
What was Griffith and Avery experiment?The experiment performed by Griffith and Avery is known as "Transforming principle". This experiment was performed to prove the genetic material of the cell.
The experiments performed by Griffith and Avery proved that the DNA (Deoxyribonucleic acid) of the heat-killed S strain bacteria was responsible for the development of pneumonia in mice that were infected with the heat-killed S and live R-strain bacteria. They concluded that the DNA of the bacteria of the S-strain bacteria was passed on the next generation to the offspring, which was able to infect lungs.
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The
absorbs most of the nutrients obtained from our diet.
Absorption of nutrients mostly occurs in the small intestine.
According to the geological record, during which geological time period were the sands and clays underlying Long Island and Staten Island deposited?
Answer:
The correct answer is - Cretaceous period.
Explanation:
The Magothy Formation occurred during the cretaceous period. The Magothy formation is the formation of the consolidated sand and layers of clays deposited beneath Quaternary glacial cover throughout most of Long Island, and the south shore of Staten Island.
This formation is composed of gravel of clay and coarse sands. The thickness ranges between 10 and 200 feet. It is formed above the Raritan Formation which is upper clay and below slit deposits formation.
What are the inputs of photosynthesis? Can someone explain what this question means
You are testing learning and memory in two strains (A and B) of hamsters by determining which hamsters learn and remember how to navigate a maze better. You discover that a strain of hamsters raised in a diverse environment has enhanced memory compared to a strain of hamsters raised in a bare cage. You look at a specific gene that is involved in brain development and is activated during learning and memory. If you use bisulfite treatment and subsequent sequencing to study the methylation pattern is of the promoter for this gene, you find that at the same region of the promoter sequence:
Strain A has the following bisulfite treated sequence: GTACGTTAAACGATCG
Strain A has the following untreated sequence: GTACGTTAAACGATCG
Strain B has the following bisulfite treated sequence: GTATGTTAAATGATTG
Strain B has the following untreated sequence: GTACGTTAAACGATCG
Based on the sequences above, greater levels of transcription for this learning and memory gene more likely occur in which of the strains?
Answer:
The correct answer is - Strain B.
Explanation:
The methylation process is adding the methyl group to the DNA molecule that can alter the activity of the DNA segment without any change in the sequence. Methylation presence in the promotor in a gene can repress the transcription process.
By the sequence given it is clear that strain B is not treated and less likely to methylated whereas strain B is more likely to methylated so the greater transcribe sequence would be - Strain B.
Describe the similarities and differences between plant and animal cells
suggests that children are active learners who essentially socialize
themselves.
1) Gender schema theory
2) The autobiographical author
3) Theory of mind
4) Social learning theory
Answer: gender schema theory
Explanation:
Suggest that children are active learners who essentially socialize themselves by Gender schema theory.
What do you mean by Gender schema theory?Gender schema theory may be defined as a concept that children understand regarding male and female positions and roles from the culture in which they live.
Gender schema theory deals with the principle of socialization among young children. It is the basis of learning the concept and functions associated with societies.
Therefore, suggest that children are active learners who essentially socialize themselves by Gender schema theory.
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factors affecting environment and development
Answer:
Environmental factors affecting plant growth and development include light, temperature, water, humidity, and nutrition. At the time of nurturing a tree, it is important to know how these factors could affect the growth and development of a plant. Knowledge about environmental factors helps the owner promotes proper growth.
Prions are
A) proteins coded by genes.
B) strands of nucleic acids encased in a protein coat.
C) viral-infected cells.
D)infectious proteins with no associated nucleic acid.
E) viral nucleic acids integrated into the host chromosomes.
Answer:
D) infectious proteins with no associated nucleic acid.
Explanation:
What is the difference between chemical and physical properties? Physical properties can be observed using your senses but not chemical properties.
O Chemical properties are harder to change than physical properties.
Chemical properties need chemicals for any type of changes.
Answer:
Chemical properties are harder to change than physical properties.
Answer:
Chemical properties are harder to change than physical properties.
Explanation:
What is the difference between chemical and physical properties? Physical properties can be observed using your senses but not chemical properties.
O Chemical properties are harder to change than physical properties.
Chemical properties need chemicals for any type of changes.
Ella and Olivia are sisters. Both sisters are taller than average, but each sister has specific traits the other sister does not. Ella is a competitive swimmer who trains outside in the summer. Her hair is bleached blond by the sun and chlorine in the pool water. Her many hours of practice have made her fit and muscular. Olivia loves to help people and wants to become a nurse someday. She volunteers every week at the nursing home where her great-grandmother lives. She walks the residents to and from their daily activities, and in the evening during dinner, plays the piano beautifully for them. Which of the following traits is inherited? a Piano Skills b Strong muscles c height d sun-bleached hair
Answer:
a
Explanation:
Explain Darwin’s theory of evolution
Answer:
Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
Explanation:
hope it helps u
Which organelle is most similar to the nervous system based on its function
Answer:
The nucleus
Explanation:
It is the control center of the cell. It contains DNA, which tells the cell what proteins are to be made.
Why is the process of translation important? Select all that apply.
A. RNA carries DNA’s code out of the nucleus
B. RNA has different nitrogen bases than DNA
C. DNA cannot leave the nucleus
D. DNA is double stranded and RNA is single stranded
E. DNA winds itself up into chromosomes inside the nucleus
Sometimes an organ can be replaced by moving it from one part of the body to another. This can be done, for example, to replace damaged skin or joints. In these cases: rejection of the transplanted organ would not be expected. antibodies would be generated against the transplanted organ. antigens would be generated against the transplanted organ. immunosuppressant drugs would be required to prevent transplant rejection. rejection of the transplanted organ would still be expected.
Answer:
rejection of the transplanted organ would not be expected.
Explanation:
Organs can be defined as specialized body tissues united to perform specific functions in living organisms. Some examples of organs found in humans are brain, bladder, kidney, heart, intestine, eyes, lungs, liver, etc.
In the field of Medicine and Surgery, an organ is sometimes replaced for specific reasons, by moving it from one part of the body to another; this process is generally referred to as a transplant. Thus, it's mainly done to replace damaged skin or joints in the body of a living organism such as humans.
Hence, in these cases, rejection of the transplanted organ would not be expected because an examination and matching of the organ is carried out by the medical professionals before transplant.
g John Smith is a pig farmer. For the past 5 years, Smith has been adding vitamins and low doses of antibiotics to his pig food; he says that these supplements enhance the growth of the pigs. Within the past year, however, several of his pigs died from infections of common bacteria, which failed to respond to large doses of antibiotics. Can you explain the increased rate of mortality due to infection in Smiths pigs
Answer:
Due to tolerance against antibiotic.
Explanation:
The increased rate of mortality occurs in the pigs due to the bacteria which gets tolerance against the antibiotics. The regular use of same antibiotic kills most of the bacteria but in some bacteria mutation occurs that produces tolerance against the antibiotics and there is no effect of antibiotics on then and they are able to cause infection in the organism that leads to death. So the use of same antibiotics is not good for the pigs, the pig farmer should apply different type of antibiotics due to which the bacteria has zero tolerance.
atch the statement to the following options.A. One of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.B. Several X-shaped structures may be visible under the microscope and indicate where crossing over has occurred.C. A lattice of protein holds two replicated chromosomes in precise register with one another.D. Four chromatids are held together by a zipper-like structure.E. A process in which pairs of homologous complex chromosomes line up side by
Answer:
A. Homologue.
B. Chiasma.
C. Synaptonemal.
D. Synaptonemal.
E. Synapsis.
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
Synaptonemal complex can be defined as a network of proteins that is responsible for holding homologous chromosomes (homologues) together.
Generally, a synaptonemal complex (protein lattice) is formed between homologous chromosomes during mitosis and meiosis. Also, synaptonemal complex is important for the formation of the four sister chromatids referred to as tetrads.
Furthermore, the synaptonemal complex (protein lattice) has a tripartite structure which comprises of the following components;
I. SC protein-1 (SYCP1).
II. SC protein-2 (SYCP2).
III. SC protein-3 (SYCP3).
In conclusion, the synaptonemal complex plays a significant role in synapsis, recombination and chromosome pairing.
Matching the various terminologies in genetics with their description, we have;
A. Homologue: one of a pair of chromosomes with similar genetic information and from different sources like the sperm and egg.
B. Chiasma: several X-shaped structures may be visible under the microscope and indicate where crossing over has occurred.
C. Synaptonemal: a lattice of protein holds two replicated chromosomes in precise register with one another.
D. Synaptonemal: four chromatids are held together by a zipper-like structure.
E. Synapsis: a process in which pairs of homologous complex chromosomes line up side by side.
Genetic engineering techniques can be used when analyzing and manipulating DNA and RNA. Scientists used gel electrophoresis to study transcription of gene L and discovered that mRNA strands of three different lengths are consistently produced. What explanations best accounts for this experimental result?
Answer:
the precursor messenger RNA (pre-mRNA) of the L gene underwent alternative splicing, thereby producing three different mRNAs that have different lengths
Explanation:
In eukaryotic organisms, transcription produces a precursor mRNA (pre-mRNA), which is a non-processed RNA sequence that contains both non-coding regions (i.e., introns) and coding regions (i.e., exons). Subsequently, this pre-mRNA is converted into a mature messenger RNA (mRNA) by a process known as 'alternative splicing', where introns are removed and exons and exons spliced together to form a contiguous coding sequence. During alternative splicing, differential combinations of exons can be produced from the same gene, producing different mRNAs with different lengths.
The experimental results with the gel electrophoresis of the transcription of mRNA are due to the alternative splicing.
What is alternative splicing?The genes are the codes that are enabled the formation of the DNA and RNA by expression. The transcription is the process of formation of mRNA from DNA template.
The mature mRNA is formed by the alternative splicing of the introns and the joining of exons for the functionalization. The process of alternative splicing results in the formation of the mRNA of multiple length.
The gel electrophoresis bands resulted have multiple length of mRNA. The results are the explanation for role of gene L in alternative splicing of mRNA.
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Question 1
2 pts
Which process changes water vapor (gas) into liquid water.
O Evaporation
O Condensation
O Transpiration
O Precipitation
Next >
Welco
Answer:
condensation
Explanation:
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What atoms are in photosynthesis input molecules
Answer:
Photosynthesis involves three elements: carbon, hydrogen, and oxygen
An agricultural extension (______) helps farmers and producers stay informed about current practices and technologies
Answer:
agent
Explanation:
e d g e n u i t y
On your Spring Break in Mexico, you take a break to count the starfish in a tidal pool. You notice that there is a rare recessive trait that causes the starfish to have 6 legs instead of 5. Of the 27 starfish you can find, only 1 has 6 legs. What are the allele frequencies for this population
Answer:
0.04 for 6 legs starfish and 0.96 for 5 legs starfish.
Explanation:
The allele frequency for the 6 legs starfish is 0.04 whereas, the allele frequency for the 5 legs starfish is 0.96 because there is only one 6 legs starfish in the given population as compared to 5 legs starfish. The low population of 6 legs starfish is due to the presence of recessive allele while on the other hand, higher population of 5 legs starfish is due to the presence of dominant allele. The allele frequencies for both population is done by dividing the allele of interest by total number of alleles present in the population.
Select the correct answer.
Jack owns a cat. He takes the cat to the veterinarian for a routine examination. The veterinarian Informs him that the cat has carpal
hyperextension. What can you say about the cat's condition?
O A. The cat is overweight and has disorders on all feet.
B. The cat has a degenerative disease of the hind legs.
Ос. The cat has a degenerative disease of the front legs.
OD. The cat has been injured when it landed on its wrist.
Answer:
OD. The cat has been injured when it landed on its wrist.
Explanation:
Cat's condition is The cat has been injured when it landed on its wrist.
It happens due to the result of a single traumatic injury that ruptures the palmer ligaments in the front foot.It may also develop from related injury caused by jumping from an elevated surface.What is carpel hyperextension ?It is the abnormality of the carpels that cause hyperextension of the joints.It can cause trauma may be associated with pain and swelling.To know more about carpal hyperextension here
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Describe three major ways humans use land
Answer:
they built farms buildings and broke the tree for roads
Explanation:
What is the relationship among force, mass, motion and speed of motion?
Answer:
Ye haw
Explanation:
Newton's second law of motion seems simple enough: Push on an object of a certain mass, and it accelerates based on the amount of force and mass. A small force with a large mass results in a slow acceleration, and a large force with a small mass gives a fast acceleration
What would cause a person to have two copies of the bent thumb allele (tt)?
1. A person whose mother or father had two copies of the bent thumb allele will always have two copies of the allele.
2.A person with two copies of "t" inherited one from their mother and one from their father.
3. A person born with one "t" mutation is more likely to develop a second "t" mutation during their lifetime.
4. A person with two copies must have duplicated the "t" allele through mitosis early in development. (They inherited one, then doubled it)
Answer:
A person with two copies of "t" inherited one from their mother and one from their father
Explanation:
This is because both the father and the mother are carriers of "t" alleles which is a bent thumb. When the parent mate, the father donate one t and the mother too donate one t allele, therefore the person will inherit bent thumb from them.
How did the result of the Hershey chase experiment strengthen Averys conclusions?
In which biome is biodiversity most threatened?
OA) wetland
B) taiga
OC) grassland
D) tropical rain forest
HELP ASAP
Use the scenario to answer the following question.
A forest ecosystem is home to mountain lions, coyotes, bobcats and deer.The deer eat grass. The mountain lions, coyotes, and bobcats eat deer. Hunters began killing large numbers of mountain lions, coyotes, and bobcats. About twenty years later, the deer population had largely increased. The teacher asked the students to explain why the population of deer had a large increase in population size.
Which student’s argument MOST accurately explains the increase in the deer population?
A. Student 2: The number of deer increased because without mountain lions, coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer.
B. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat.
C. Student 1: The number of deer increased because deer populations are always increasing, even when there are mountain lions, coyotes, and bobcats preying on them.
D. Student 4: The deer population increased because with fewer mountain lions, coyotes, and bobcats, there was less competition within the deer population.
Answer:
A
Explanation:
The mountain lions, coyotes, and bobcats control the deer population hence in their absence the deer life span increased.
