Option b is Correct. In DNA or RNA, a phosphate is connected to two sugars by covalent bonds to form each phosphodiester linkage.
The 5' carbon of one sugar (deoxyribose or ribose) and the 3' carbon of another sugar molecule are joined to form the phosphodiester linkage in DNA or RNA (deoxyribose or ribose). Consequently, two sugar molecules form the phosphodiester bond.
The 3' carbon atom of one sugar molecule and the 5' carbon atom of another, deoxyribose in DNA and ribose in RNA, are linked by a phosphodiester bond in DNA and RNA. Over two ester linkages, two pentoses with five carbons each create strong covalent bonds with the phosphate group.
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Which of the following best explains a way that a molecular clock can be used?
A) The number of DNA mutations in an organism is measured over time to determine how long it will take for a new species to evolve.
B) The number of DNA mutations in a species is compared to the number of DNA mutations in another species to determine the relative amount of time each species has been evolving.
C) The number of differences in a specific DNA sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.
D) The number of differences in the DNA sequences of two organisms of the same species is averaged to determine how many years of evolution have occurred.
According to the research, a molecular clock can be used to determine the number of differences in a specific DNA sequence of two species (c).
What is a molecular clock?It is a tool that allows us to relate the divergence time or the time elapsed since the divergence of two current lineages from their common ancestor.
It is based on analyzing and comparing the genetic material of organisms to establish the number of mutations.
Therefore, we can conclude that a molecular clock can be used to determine the number of differences in a specific DNA sequence of two species (c).
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Please help with questions 1 and 2 thank you
Answer:
the answer for number 1 is A and number 2 is C
Explanation:
1. Insulin controls the level of glucose in the blood by instructing the liver to remove the sugars and store them. So, this cause the amount of glucose (sugar) to decrease as the level of insulin increases.
2. Hormones and receptors have connections when it comes to this topic. Tissues have nothing to do with them, because it didn't ask about the body parts and etc. Antibodies; more to the drugs topic. And carbohydrates has nothing to do with hormones for this question.
Use the sample data below to answer the following question(s). Biologists studying the re-vegetation of two species of succulent plants in the South African desert examined the number of plants that survived depending on whether they were planted in multi-species clumps or planted alone. The following data resulted:
Planted in Planted
Multi-Species Clumps Alone
Number of Species 1 Survived 64 87
Number of Species 2 Survived 34 47
If two different surviving plants are randomly selected, find the probability that they both were species 1.
If two different surviving plants are randomly selected, find the probability that they both were planted alone.
The probability that they both were planted alone is 0.3325.
What is genetic probability?Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.
In this case:
Number of plants planted alone = 134P(both plants were planted alone) = 134/232 x 133/231 = 0.3325So the probability that both were planted alone is 0.3325.
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Why does climate change cause more intense hurricanes?
Less energy causes more storms.
Increased energy causes stronger storms.
Less energy causes less storms.
Increased energy causes weaker storms.
A person with a traumatic brain injury now exhibits some symptoms including
erradic, impulsive behavior, worse judgement than usual of risky situations, and odd
social behaviors and violent mood swings. Based on these symptoms, which area of
the brain was most likely invovled in the injury?
A. Temporal lobe
B. Cerebellum
C. Frontal lobe
D. Thalamus
Answer:
C. Frontal lobe
Explanation:
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The frontal lobe of the brain, behind the forehead, is strongly associated with motor function, spontaneity, impulsive behavior, judgement decisions, and social behaviors and mood.
What kind of geological forces or events cause mountains to form? Using the Himalayan Mountains as an example, explain the process of mountain building that is caused by plate movement.
The Indian Plate and Eurasian Plate colliding caused the formation of the Himalayan Mountains and Tibetan Plateau.
When India and Tibet collided, the relatively light sedimentary and metamorphic rock that makes up the Indian subcontinent pushed against Tibet, driving it upwards, and creating a gigantic mountain fold instead of descending with the plate.
Where continental plates clash, mountains form. Each plate will not sag below the other because they are the same thickness and weight.
Instead, they give way and fold until the rocks are forced to take the shape of a mountain range. Mountains keep rising in height as the plates continue to collide.
As a result of the Indian Plate and Eurasian Plate colliding, the Himalayan Mountains and Tibetan Plateau were created.
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How do the zones in a school of fish benefit them?
A. This allows them to move more quickly when being attacked by a predator.
B. This allows them to move in unison, so that when one moves in a zone every zone shifts.
C. This helps them filter feed.
D. This allows them to protect young in the center of the group.
Answer: B. This allows them to move in unison, so that when one moves in a zone every zone shifts.
Explanation:
which of these should be reportable reasons to protect public health?
a) Skin cancer
b) Heart disease
c) HIV
d) Diabetes
Among the following HIV should be reportable reasons to protect public health.
HIV impairs the body's defenses against infections and leads to AIDS. Contact with contaminated blood, or fluids might result in the virus being spread. Flu-like symptoms including fever, sore throat, and exhaustion might appear a few weeks after HIV infection. Until AIDS develops, the illness is typically asymptomatic. Fatigue, fever, night sweats, and weight loss are a few of the signs and symptoms of AIDS. Despite the fact that there is no known treatment for AIDS, diligent adherence to anti-retroviral therapy (ART) can significantly decrease the disease's progression, avoid complications and secondary infections, and lengthen life. One of the primary tactics used in the prevention and control of HIV/AIDS around the world is the dissemination of information and awareness about HIV.
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What does the biodiversity of genes refer to?
A. the variety between individuals, even within a species
B. the variety between species
C. the variety between identical twins and triplets
Answer:
B
Explanation:
genetic diversity is the biological variation that occur within species
Name one function of this cell
Answer:
First responders of the innate immune system to prevent/reduce spread of infection through the metabolism of microorganisms (usually bacteria and fungal infection)
Explanation:
This cells is a neutrophil which you can identify through the multilobed nucleus (the 4 bright red lobes). Additionally, you can identify the type of cell by the fact that it has granules (the small circles).
For a mitocondria.
The hydrogen ion reservoir is located in the ______________________________ and ATP is synthesized in the ____________________.
Answer
For a mitocondria.
The hydrogen ion reservoir is located in the matrix and ATP is synthesized in the inner mitochondrial membrane.
look at the picture
Answer:
B
Explanation:
Please provide the complementary DNA sequence, mRNA sequence, tRNA sequence, and amino acid sequence for the following DNA segment. ACAAGACGGTACTGA
The complementary sequence is TGTTCTGCCATGACT the mRNA is UGU UCU GCC AUG ACU and amino acid sequence Cysteine-Serine-Alanine-Methinine-Threonine.
What is the genetic code?The genetic code is a series of instructions to synthesize a protein form a given gene sequence.
The genetic code starts in the DNA, then pass to the mRNA, and finally to the protein sequence.
In conclusion, the complementary sequence is TGTTCTGCCATGACT the mRNA UGUUCUGCCAUGACU and amino acid sequence Cysteine-Serine-Alanine-Methinine-Threonine.
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As a consequence of infection by a temperate bacteriophage such as lambda, the host cell:.
The host cell may lyse or may continue to divide and replicate both itself and the prophage.
What is the effect of temperate bacteriophage on a host cell?Lytic cycle:
The infecting phage kills the host cell at the end of the lytic cycle, also known as a virulent infection, to create a large number of its own offspring. The phage genome immediately produces early proteins that degrade the host DNA after being injected into the host cell, enabling the phage to take over the cellular machinery.
The remaining proteins needed to construct fresh phage particles are subsequently synthesized by the phage using the host cell. The new genetic material is packed into the head while new daughter phage particles are built, and the heads and sheaths are created independently. In the course of this process, phage enzymes gradually weaken the host cells, which eventually burst, dispersing 100–200 additional phage progeny into the environment.
Lysogenic cycle:
The lysogenic cycle, also known as temperate or non-virulent infection, uses the host cell as a haven where it can survive in a latent state. It does not harm the host cell. After the phage DNA is injected into the host cell, it uses integrases encoded by the phage to integrate into the host genome, at which point it becomes known as a prophage.
The host cell divides for the duration that it is there and does not create the proteins necessary to make progeny, at which point the prophage genome is passively copied alongside the host genome. The bacterial hosts are typically somewhat unaffected by this procedure because the phage genome is typically quite tiny.
I understand the question you are looking for is this:
As a consequence of infection by a temperate bacteriophage such as lambda, the host cell
lyses as a result of bacteriophage release.never lyses but continues to divide and replicate both itself and the prophage.divides faster at moderate temperatures.may lyse or may continue to divide and replicate both itself and the prophage.Learn more about bacteriophages here:
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What is the maximum weight a girl can lose in 30 days?
Answer: 20 pounds in a month
Explanation: you can loose up to 5 pounds a
Which planet's motion did Kepler accurately predict to support his theory that the Sun causes the movement of the planet?
Venus
Mercury
Earth
Mars
Select the correct answer.
The world produces about 3.9 billion tons of food every year. Of that amount, approximately 2.6 billion tons Is consumed each year. The rest is
wasted. What percentage of food Is wasted every year? Choose the closest answer.
OA 30%6
© B. 33.33%
© C. 60%6
© D. 66.66%
Answer:
B is the right answer .....
3.9-2.6=1.3
now to find the percentage :
1.3/3.9×100 = 33.33%
hope it helps....
The lagging strand runs in a _________ direction and is replicated _________.
A. 3’ to 5’, continuously
B. 5’ to 3’, continuously
C. 3’ to 5’, discontinuously
D. 5’ to 3’, discontinuously
The lagging strand runs in a 5’ to 3’ direction and is replicated discontinuously.
Why a discontinuous or delayed tape?The other strand, called delayed, is replicated discontinuously. In this case, the presence of Okazaki fragments is necessary, small pieces of DNA that will bind to form a new strand. - DNA is degraded by two types of enzymes.
The ends of a DNA strand are classified as 5' and 3', as they correspond to the carbon number of the pentose where the phosphate and hydroxyl (OH) group are located, which join in a phosphodiester bond.
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Claim and evidence:
What would happen to the effectiveness of an original vaccination if a mutation in the virus caused the protein spike to change ?
Make a claim that answers the question, then support that claim with evidence. What did you learn about mutations that would support your claim ?
Answer__________________
______________________
____________________
________________________
____________
It would happen that the effectiveness of an original vaccine could become less if there was a mutation in the virus that caused the protein spike to change because the antibodies created would not be specific for the new virus.
What would happen to the mutated virus?Vaccines trigger an immune response to fight disease-causing organisms, a mutation in the virus to be fought would change the effectiveness of this immune response, as the specificity would not be the same with the mutant virus.
With this information, we can conclude that The immune response would not be specific for the new virus that caused the protein spike to change.
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During transcription, mRNA is produced from the antisense strand of DNA. This means that the mRNA will match the
please answer only if you are sure
A)
antisense strand of DNA, substituting thymine for uracil.
B)
antisense strand of DNA, substituting uracil for thymine.
C)
sense strand of DNA, substituting uracil for thymine.
D)
sense strand of DNA, substituting thymine for uracil.
Answer:
C) sense strand of DNA, substituting uracil for thymine.
Explanation:
The antisense strand matches the sense strand. Thymine is only used in DNA while Uracil is only used in RNA.
Brainliest, please :)
DescDescribe the evidence for endosymbiosis that is present in eukaryotic cells today. ribe the evidence for endosymbiosis that is present in eukaryotic cells today.
The evidence for endosymbiosis present in eukaryotic cells is associated with the presence of mitochondria and chloroplasts.
What is the endosymbiosis theory?The endosymbiosis theory is a theory in biology that states eukaryotic cells evolved as a consequence of symbiotic relationships between prokaryotes and primitive eukaryotes.
The endosymbiosis theory is supported by mitochondria and chloroplasts, which contain their own genetic material, ribosomes and a similar size when compared to bacteria.
In conclusion, the evidence for endosymbiosis is associated with the presence of mitochondria and chloroplasts.
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What are the steps in carbon dioxide sequestration?
OA. Capture carbon dioxide, transport it, and release it into the upper
atmosphere.
OB. Trap carbon dioxide, compress it, and use it to support
photosynthesis in forests.
O C. Trap carbon dioxide, compress it, and use it to produce dry-ice
products.
OD. Capture carbon dioxide, transport it, and inject it into underground
formations.
The steps in carbon dioxide sequestration is Capture carbon dioxide, transport it, and release it into the upper atmosphere.
What is carbon sequestration?The most often produced greenhouse gas is carbon dioxide. The technique of removing and storing carbon dioxide from the atmosphere is known as carbon sequestration. It is one way to lessen the quantity of carbon dioxide in the atmosphere, which will lessen the effects of global warming. Geologic and biologic carbon sequestration are the two main forms being evaluated by the USGS.There are two main sources of atmospheric carbon dioxide: natural processes and human activity. The majority of animals, which exhale carbon dioxide as a waste product, are natural sources of carbon dioxide.The main carbon dioxide emissions from human activity are energy generation, which includes burning coal, oil, or natural gas.The steps in carbon dioxide sequestration is Capture carbon dioxide, transport it, and release it into the upper atmosphere.
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The step of Carbon sequestration capture carbon dioxide, transport it and inject it underground formations.
What is Carbon sequestration?
Carbon sequestration is the process of capturing and storing atmospheric carbon dioxide. It is the method to reduce the carbon from atmosphere to reduce the climate changes from the environment.
The storage of Carbon is long term in Ocean, plants ,soils, geologic formations and the ocean.
Anthropogenic activities are done such as burning of fossils and release carbon for storage of coal, petroleum and natural gas and delivered to atmosphere as Co2 gas .
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THINKING
1. A protease which is protein in nature:
A. Lipase
C. Gastrin
B. Enterokinase
D. Amylase
Answer: D. Amylase
Explanation:
Amylase is a enzyme that breaks down protein present in food.
What happened to the music industry between and 1987
The music industry between 1980 and 1987 experienced a positive turnaround in quality and competition.
What is Intellectual Property Antitrust Protection Act of 1987?This act was set up by the government in 1987 to ensure that the consumer welfare was made priority.
There was an increase in quality and competition due to intellectual property laws which was established and also led to the music industry experiencing a boom.
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If the earth’s inner core is so hot, then why isn’t it molten rock?
Answer:
The temperature of the inner core is far above the melting point of iron. However, unlike the outer core, the inner core is not liquid or even molten. The inner core's intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting.
Explanation:
Need help on this question
Answer:
the answer is B. Antigenic drift
Design an imaginary food web or describe a real one. Include at least 4 living organisms that interact in your ecosystem.
The trophic web is the interaction between different organisms in which there is energy transference. In the attached example, we consider plants, beetle, rabbit, frog, eagle, fox, mountainlion, and fungi.
What is the trophic web?The trophic web is the interaction between different organisms involving transference of energy when some of them feed on the other ones.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
• The first link corresponds to a producer organism -autotroph-.
• The following links are the consumers -heterotrophs- ⇒ herbivores and carnivores.
• The last links are the decomposers that degrade organic matter from dead organisms.
Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
Example.
To make the trophic web, first, we need to have at least four links.
So first, let us list the organisms we are working with, and then define the position of each of the organisms on the web.
plants,beetle,rabbit,frog,fox,mountain lion, eagle,FungiProducer → this is the autotroph organism that takes energy from the sun or any other inorganic source → An example of this is any plant.
Consumers → heterotroph
⇒ Herbivores → These are the animals that feed on any part of the plants → These are the beetle and the rabbit
⇒ Carnivores → These are the animals that feed on herbivores → These are the frog, the fox, the eagle, and the mountain lion
Decomposer → detritivorous organisms that take energy from dead matter → Fungi
Trophic web,
Plants directly provide energy to the beetle and the rabbitPlant >> Beetle and Rabbit
The eagle takes energy from the rabbit and the frog takes energy from the beetle.Rabbit >> Eagle
Beetle >> Frog
The fox takes energy from the frog and from the rabbitFrog and rabbit >> Fox
The Fox and the eagle transmit energy to the mountain lion.Fox and Eagle >> Mountain lion
Fungi takes energy from dead organic matterPlants, beetle, Rabbit, Fox, Eagle, Mountain lion >> Fungi
You will find an image in the attached files.
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Question 14 of 25
A student drew the following flowchart to show the movement of nutrients.
Soil → Roots → Plants → Animals
Which process is likely to be occurring in the plant's roots?
OA. Photosynthesis
OB. Nitrogen fixation
OC. Burning of fossil fuels
O D. Water transpiration
The process likely to be occurring in the plant's roots will be nitrogen fixation.
What is nitrogen fixation?It is a process whereby atmospheric nitrogen is converted to usable forms of nitrogen in the soil.
Nitrogen fixation takes place in the root nodules of leguminous plants in association with some symbiotic bacteria.
Thus, the only process that could be happening in the plant's root is nitrogen fixation.
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Complete the punnet square.
If we were to cross a heterozygous mouse with a homozygous recessive mouse, what would the probability of offspring genotypes be ?
Fill in the PERCENTAGE of the probability for EACH GENOTYPE on your show your work worksheet .
The probability of the offspring will be 50%, 50%, and 0% respectively.
Probability in geneticsIt seems the allele for the trait in question is F(f) from the image.
One parent is heterozygous while the other is homzygous.
Ff x FF
FF FF Ff Ff
Probability of FF = 2/4 or 50%
Probability of Ff = 2/4 or 50%
Probability of ff = 0
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The percentage of each genotype is;
Ff = 50%ff = 50%What is a cross?A cross is a system by which the genotype of an organism can be ascertained.
We are told that this cross is between a het--erozygous mouse with a hom--ozygous recessive mouse. Thus we have Ff and ff.
We now have the percentage of each genotype as;
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Use the information below to answer the following question(s). In a survey, the rate of heavy smokers was reported as 270 per 1000 individuals.
If two individuals are randomly selected, find the probability that neither of them is a heavy smoker.
Assume that having a child with brown eyes or blue eyes is equally likely and that eye color is independent of the other children. What is the probability of having 5 children with brown eyes?
The probability that neither of them is a heavy smoker is 0.53 or 53%
What is genetic probability?Probability serves to mathematically estimate the possibility of events that happen by chance, that is, as a matter of luck.
In this case:
Probability that selected one is heavy smoker is:
p=270/1000=0.27
Number of individuals selected is 2 and We know that:
P(X=x)=nc_x(1-p)^{n-x}(p)^x
We need to prove that X=0:
P(X=0)=nc_0(1-0.27)^{2-0}(0.27)^0
P=0.5329
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