Answer: the answer is b
Explanation: i took the quiz
In which of the following hydrogen bonds can be found?
A. Between cytosine and thymine in a DNA double helix
B. Between deoxyribose sugar and nitrogen base in a DNA nucleotide
C. Between deoxyribose sugar and phosphate group in a DNA nucleotide
D. Between purine and pyrimidines bases in a DNA double helix
Answer: C. Between deoxyribose sugar and phosphate group in a DNA nucleotide.
Explanation:
Hydrogen is a very important element in the planet due to the many uses of its compounds for example, water. Hydrogen is also very important to humans as it is integral to DNA formation.
Hydrogen bonds exist in the DNA nucleotide to ensure that different strands are connected to each other. These strands are composed of bonds between deoxyribose sugar and phosphate groups.
50 POINTS AND BRAINLIEST TO WHOEVER IS CORRECT FIRST.How are antiviral drugs used? O A. To treat bacterial infections, such as strep throat OB. To cure viral infections, such as the flu O C. To slow the spread of viruses in the body D. To prepare the body to fight future infections
Answer:
to prepare the body for future infections, the vaccine will kinda help if you have the virus but it will make you not contagious.
Answer:
C. To slow the spread of viruses in the body.
Explanation:
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Which inequality is graphed on the coordinate plane?
Answer:
C
Explanation:
Hope this helps you!!!
What is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation:
why water is called heating and cooling agent
Approximately what percent of the oxygen on Earth is produced through
photosynthesis?
Answer:
50-85%
Explanation:
Current studies on frogs and wildlife indicate that hormonally active agents (HAAs) are __________.
a.
found in insecticides and should be removed
b.
found in radionuclides in parent rock materials
c.
abnormalities associated with developmental and reproductive systems
d.
causing lung cancer
e.
creating new forms of lizards
Answer:
C
Explanation:
abnormalities associated with developmental and reproductive systems
find the meaning of ductile
Answer:
Ductility is usually defined as the extent to which a material can be deformed plastically and measured in uniaxial tension.
Explanation:
Some people cannot digest milk products because they lack an enzyme to break down lactose in milk.
Which enzyme is it?
A. hydroxylase
C. maltase
B. Lactase
D. peroxisomes
Answer:
Lactase
Explanation:
Compare adaptation and fitness
Answer:
Explanation:
An adaptation is a trait an organism has to make it better suited for the enviorment
Fitness, however is the measure of how many offspring an organism can produce and this depends on these individuals having these sucessful adaptations.
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Which two features are present in a plant cell but not in an animal cell?
Distinguishing between Cell Types
A
В
D
Please help will give brainliest!!!!!!!
С
Answer:
B and C
Explanation:
B is the chloroplast where light is captured for photosynthesis. C is the cell wall which gives the plant support and structure. Animals don't do photosynthesis and we have skeletons for support so we don't need these structures.
In a normal cellular protein, where would you expect to find a hydrophobic amino acid like valine?
A.In the interior of the folded protein, away from water.
B.On the exterior surface of the protein, interacting with water.
C.In the transmembrane portion interacting with lipid fatty acid chains.
D.In the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains.
E. Anywhere in the protein, with equal probability.
Answer:
D. In the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains.
In a normal protein, it is expected to find valine in the interior of the folded protein, away from water, or in a transmembrane portion, interacting with lipid fatty acid chains (Option D).
Aminoacids can contain hydrophilic side chains that interact with water molecules or hydrophobic side chains that cannot make hydrogen bonds and therefore do not interact with water.
In membrane protein, hydrophilic amino acids are arranged so they can interact with water on the surface of the cell membrane,
Moreover, hydrophobic amino acids of membrane proteins are arranged away from water so they can interact with fatty acid chains in the transmembrane portion of transmembrane proteins or with other hydrophobic amino acids in the interior of the folded protein.
In conclusion, in a normal protein, it is expected to find valine in the interior of the folded protein, away from water, or in a transmembrane portion, interacting with lipid fatty acid chains (Option D).
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The movement of molecules against a concentration gradient occurs during?
Answer:
In active transport, the particles move across a cell membrane from a lower concentration to a higher concentration.
Complete the flowchart to show the stages of cellular respiration and fermentation.
Cellular Respiration and Fermentation
Answer:
The stages of cellular respiration are: Glycolysis, pyruvate oxidation, Krebs cycle and phosphorylative oxidation.
The fermentation stages are: glycolysis and pyruvate regeneration.
Explanation:
Cellular respiration is a biochemical process that occurs in all aerobic organisms and aims to promote the obtaining of the necessary energy so that the cells can perform the activities they need to perform. Cellular respiration occurs in mitochondria and oxygen must be present in the process.
Fermentation is the biochemical process that replaces cellular respiration in organisms that do not survive in the presence of oxygen, the anaerobic organisms that are some fungi and bacteria. Fermentation also aims to produce cellular energy.
H20 and O2 are examples of.
Atoms, molecules, droplets
Or water
Answer:
molecules because an water would just be H20, an atom would just be oxygen or hydrogen on its own, and droplets also refer to just liquid which oxygen is not
What does this pyramid tell us about the population?
The population is growing.
The population is stationary.
The population is declining.
Answer:
Explanation:
the population is stationary
Answer:
The population is declining.
Explanation:
I just took the test its not staionary
What happens after activation of T cells
Answer:
Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Explanation:
Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.
In which scenario is the ecosystem the most stable? Suggest a reason for this and use the word competition in this explanation
Answer:
The ecosystem was most stable where the rabbit eats only plant A. I feel like this happened because since the rabbit is only eating plant a, the competition between plants A and B is reduced
Consider three different recessive mutations in Drosophila: a, b, and d. The corresponding wild type alleles are A, B, and D. A female heterozygous for these three linked genes is crossed with a male showing recessive phenotype for all three traits. The resulting offspring are shown below:
Phenotype
Number of progeny
ABD 48 , abd 52, AbD 6, aBd 4, ABd 97, abD 93, aBD 348, Abd 352
1.What is the gene sequence?
2.What is the distance between gene A and D in cM?
Answer:
48
Explanation:
DNA is used to tell people apart. What aspects of DNA do you think make this possible?
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Answer:
Kindly refer to the attachment.Thank U,NExt
DNA can be used to tell people apart - their DNA sequences or the lengths of repeated regions of DNA
Deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique.
DNA contains genetic information that is passed from adult organisms to their offspring during reproduction.Each offspring forms by the combination of the parent's gene or DNAThe actual sequence of DNA on each of the chromosomes is unique due in part to recombination.recombination causes genetic variation and made everyone unique.This is incorporated in the nucleotide sequences in DNA molecules.Thus, DNA can be used to tell people apart - their DNA sequences or the lengths of repeated regions of DNA
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w, use what you have learned about heredity to complete the chart below. The allele pairs in the left column represent eye color in fruit flies. Ris the
ominant color (red), and r is the recessive color (white). Study the chart and fill in the missing phenotypes.
Answer:
RR is hom0zygous dominant and will Red
Rr is heterosygous and will also be red
rr is hom0zygous recessive and will be white
Explanation:
The filling of the chart with respect to the genotype given is as follows:
RR (homozygous dominant) gives Red eye color in fruit flies. Rr (heterozygous) will also deliver red eye color in fruit flies.rr (homozygous recessive) gives white eye color in fruit flies. What is meant by Genotype?Genotype may be defined as the ultimate combination of alleles of those genes which are selected for specific study in order to deliver some sort of genetic information.
As it is an organism is its complete set of genetic material. These can also be utilized in order to refer to the alleles or variants an individual carries in a particular gene or genetic location.
In fruit flies, red eye color is dominant over white eye color. So, when red eyed-colored (RR) flies are crossed with white-eyed colored flies (rr), they produce offspring with the genotype Rr and phenotype of red-eye color. This all deals with the law of dominance.
Therefore, the filling of the chart with respect to the genotype given is well described above.
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Dogs can inherit four features: fur pattern, fur length, ear length, and tail length. The alleles are expressed as shown:
Dominant alleles
Recessive alleles
F: spotted fur
f: solid-colored fur
L: long fur
1: short fur
E: long ears
e: short ears
T: long tail
t: short tail
Two dogs mate and have puppies. Both parent dogs are heterozygous for spotted fur. Fill in the Punnett square to show the potential outcomes of this cross.
dropping the letters)
On
When both parents heterozygous for spotted fur are mated with each other, they have offspring with genotypes FF, Ff, Ff, and ff.
What is Allele?An allele may be defined as one or two or more alternative forms of a gene that describes a specific character.
The Punnett square of the mentioned cross is given below:
Therefore, it is well described above.
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What is the advantage of graphic scientific data?
Answer:
Advatages below
Explanation:
• visual representation of their results
• influence the public
a. visually driven society
b. when looking at a graph of experimental results,
always ask yourself if the researchers have an ulterior
motive
DNA polymerase has multiple mechanisms for editing and error correction whereas the capacity for error correction in RNA polymerases seems to be quite limited. However, like DNA mutation, an RNA polymerase error in transcription can cause production of a mutated protein. The limited error correction of RNA polymerase seems to be inconsistent with the potential serious consequence of producing a protein with an altered amino acid sequence. Select three reasons that explain why error correction is not as necessary in RNA polymerases as it is in DNA polymerases.
The given question is incomplete as the option are not provided however, the correct options are as follows:
Defective proteins are often degraded quickly, making their effects temporary.
Single amino acid substitutions caused by errors in mRNA transcription would not affect protein function.
Unlike DNA mutations, mRNA transcripts have short half-lives and are not inherited across many generations.
Degradation of defective proteins activates mRNA repair pathways RNA polymerases synthesize many transcripts per gene, so only a small fraction of RNA transcripts would have errors.
ch mRNA molecule is only translated once and then degraded
Answer:
The correct answer is - statements 1, 3, and 4.
Explanation:
DNA polymerase is the enzyme that is responsible for the production of the new DNA molecule and any mutation in this enzyme that will inhibit the DNA repair process which affects future generations.
RNA polymerase is an enzyme that is responsible for the transcription of DNA to mRNA and any error-prone mRNAs have chances of degradation. Error in DNA replication is from generation to generation as it is inherited
The process of transcription is quick.
Can someone help me please, I just want to understand how to do it
Explain the role of certain plant cells in flood control
Answer:
To absorb water to lowers the intensity of flood.
Explanation:
The main role of certain plant cells in flood control is to absorb water as well as the decrease the flow of water which slower down the intensity of flood. There are some plants in which their cells absorb huge amount of water which decreases the amount of water in the flood and as a result flood water decreases so that's why vegetation is very important in order to avoid flooded condition.
A mother and father both have brown eyes, but their child has blue eyes. Which statement most likely explains this
Answer:
Blue eyes is a recessive trait
Explanation:
Recessive traits show in 25% of the offspring, but they skip the first generation. This means that the 25% only shows up in the second generation unless two recessive traits are put together. A likely combination is that both of the parents had Bb, which you can put into a punnet square to visualize.
B b
B BB Bb
b Bb bb90
Describe how the conservation of matter and energy is applied to stellar formation. In your answer discuss the early components of stars and what happens at the end of stellar lifecycles. Think about the matter in a star and what happens to it.
Answer:
Explanation:
In Labrador retrievers some puppies have pink noses and some have black. Labrador retrievers with black fur almost always have black noses. What type of inheritance pattern is this? Explain how this is possible.
Do producers in an ecosystem transfer all their energy to first-level consumers?
Answer:
Producers in an ecosystem transfer all their energy to primary-level consumers. Organisms at higher trophic levels tend to be fewer in number than those at lower trophic levels. ... The lowest trophic level of any ecosystem is the producers.