Answer:
Keystone Species
Explanation:
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Answer:
A species is any species that is essential to the health of an ecosystem? Keystone species
Explanation:
So Keystone species is your answer.
Suppose we have access to the four nucleotides which compose DNA: A, T, C and G. Placed into a sequence with one another, they form a code which can be read by the cell to provide a blueprint for the creation of proteins. When forming a sequence of three nucleotides, the sequences TAA, TAG, and TGA are codes to tell the cell to stop reading the DNA. Assume each sequence of nucleotides is equally likely to be formed.
A. How many possible ways are there to form a sequence of three nucleotides? - 64
B. Of the possible ways to form a sequence of three nucleotides, what is the probability to form a stop sequence? = 0.0469
C. What is the probability that a sequence that is not a stop sequence is formed? 64-3 = 61 61 = 0.983
D. For a three-nucleotide sequence, G is engineered to be in the third place. For the remaining two nucleotides in the sequence, C cannot be in the second place (for example CTG is allowed but not TCG). How many sequences can be formed?
E. Of the number of sequences found in Part D, what is the probability that a stop sequence is formed?
Answer:
The correct answer is :
A. we know there are four nucleotides and three sequence makes a triplet code then total possible ways are:
4^3 = 4×4×4= 64 ways.
B. The stop codons by 64 amino acid or triplet codes: TAA, TAG, and TGA then the probability would be = 3/64 = 0.0469
C. the probability that a sequence that is not a stop sequence is formed = total minus probability of stop codons:
64-3 = 61
61/64 = 0.953
D. G at end place and c should not be in the middle then:
the codes will be =
ATG
AGG
AAG
TTG
TGG
TAG
CTG
CGG
CAG
GTG
GGG
GAG
Total 12 triplet code sequences.
E. Among all these 12 codons there is only one stop codon that is TAG so the probability of this stop codon is :
1/12 = 0.083
Normal mitotic cell division results in each daughter cell having 1/2 the chromosomes
A True
B False
Answer:
B
Explanation:
it should be a whole number and not 1/2
which of the following statements is accurate for DNA replication in your cells but not PCR
Answer:
Ligase is essential.
Explanation:
The statements that is accurate for DNA replication in your cells but not PCR is that ligase is essential
For better understanding let's explain why ligase is essential
Ligases Enzyme is very essential in DNA replication. it is use for DNA metabolism. They help in catalysis by joining of nicked DNA which is very much needed in in DNA replication. In DNA repair pathways, Ligase is used in the re-synthesis of DNA. It is found that in higher organism, it is of different types..Ligase is not essential in PCR due to the fact that it is not needed.
From the above we can therefore say that the answer The statements that is accurate for DNA replication in your cells but not PCR is that ligase is essential is correct
Learn more about DNA replication from:
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Channels utilizing facilitated diffusion
A allow things to enter and leave the cell
B require ATP
С
both A and B
D
none of the above
A(n) __________ is all the animals of the same species in the same area at the same time.
A. community
B. population
C. species
D. ecosystem
Answer:
B. Population
Characteristics of meiosis include _____.
the most common kind of cell division
four daughter cells produced when parent cell divides
same number of chromosomes in each daughter cell as in the parent cell
different DNA in the daughter cell than in the parent cell
Answer:
4 daughter cells produced when parent cell divides
Describe the organization of living things from smallest to largest. How is each level different?
Answer: The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
They differ from size, structure, complexity, and how they work as a whole
Explanation:
Hope this helps!
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If there's a higher concentration of solutes outside of the cell what will happen
Answer:
If there's a higher concentration of solutes outside of the cell (the solution is known as hypotonic solution) then the cell will swell up as the solutes will flow into the water through the process of osmosis. The cell may also swell up & burst (if it's an animal cell).
small grasses are usually the first plants to appear in an area after a disturbance. these grasses are an example of which type of species?! HELP
A virus that can switch from the lysogenic cycle to a lytic cycle is called
o transformation.
o latency.
o phage conversion.
o temperate.
o injection.
Which of the following statements best describes a decomposer?
A. they are abiotic and they only eat producers they are biotic
B. they consume other biotic things for energy
C. they are biotic and they break down dead material
D. they are abiotic and they eat both plants and animals
Answer:
b
Explanation:
The statement that best describes a decomposer is that they are biotic and they break down dead material; this is option C. They break down dead organic matter, such as dead plants and animals, into simpler substances that can be used by other living organisms.
What are decomposers?Decomposers are an important part of the food chain because they break down dead organic matter into simpler substances that can be reused by other living organisms. When plants and animals die, their bodies are broken down by decomposers into nutrients such as carbon, nitrogen, and phosphorus, which are released back into the soil or water. These nutrients are then taken up by other living organisms, such as plants, which use them to grow and produce their own energy.
Hence, The statement that best describes a decomposer is that they are biotic and they break down dead material that is the option C
learn more about the Decomposers here
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The medical term for "to break" is
HELP!!
Question: Acetylation of histones will prevent transcription from happening
True or False
Answer:
T
Explanation:
The long term survival of any species of organism is possible only if the organisms can
- Who is more likely to become extinct, especially when the conditions in the environment change?
generalists
specialists
Carnivores
producers
2. Which is an example of interspecific competition?
blue jays eating seeds from my bird feeder
white-tailed deer looking for food in a field
polar bears praying on seals in the artic ocean
squash outgrowing lettuce in my garden
Process 2 is known as
Answer:
Transcription
Explanation:
From the available diagram, process 2 converts, or transcribe or copies DNA nucleotide sequence information into RNA sequence information.
Hence, in this case, the correct answer is TRANSCRIPTION
How does the shape of the red blood allow diffusion to occur efficiently
Answer:
The partial pressure of oxygen determines the affinity of hemoglobin for oxygen. Red blood cells have the shape of a flattened disk, generating a broad surface area for the diffusion of oxygen. Since their only purpose is carrying oxygen throughout the body, they lack many typical cell structures, including a nucleus.
Explanation:
Hope this helps
Answer:
* Because of their viscoelastic characteristic, red blood cells are able to squeeze through very thin capillaries in order to deliver oxygen and remove carbon dioxide. * The biconcave shape of red blood cells helps maximize the overall surface area required for oxygen absorption.
Explanation:
Why do cells use fat and starch for long term energy storage instead of atp molecules
Answer:
because it is hard to breakdown fat in a very short time while ATP can be broken down in a very short time.Fats have a very strong bond of molecular chains and this makes it hard to breakdown quickly
Please help on both pls pls please please
Answer:
6. D 7. C
Explanation:
Answer:
6: D) Paramecium and animal cells are both a round shape.
7: C) Plant cells are square and animal cells are round.
Explanation:
6--
A) false. Animals are multicellular organisms
B) false. Paramecium and animal cells have round characteristics
C) false. Paramecium are unicellular organisms
D) true.
7--
A) false. Animal cells have round characteristics
B) false. Both plant and animal cells are multicellular organisms.
C) true. (the plant cell shape assists in the organisms' structure/resource movement)
D) false. Both plants and animals are made of cells, billions of them.
Many plants produce seeds which have small hooks on them. These hooks will attach to animals as they move past the plants. What process do these hooks help the plant with?
A. pollination
B. fertilization
C. germination
D. seed dispersal
which substances needed for photosynthesis is carried into a leaf from the stem
Answer:
water
Explanation:
The main substances needed for photosynthesis are carbon dioxide and water. Carbon dioxide enters the leaves through tiny openings on the leaf called stomata. The water is pulled up from the ground through the roots, up the stem, and into the leaves.
In DNA, what would be complementary to A - G - C-T-A?
Answer:
T-C-G-A-T
Explanation:
Adenine pairs with Thymine (A with T)
Cytosine pairs with Guanine (C with G)
How does dividing species into kingdoms help us understand them?
It helps us to see which animals existed first.
It helps us understand how animal organ systems work.
It helps us understand the differences and similarities among living things.
It helps us to predict which changes animals will make to adapt to their surroundings.
Answer:
C) It helps us understand the differences and similarities among living things
Explanation:
We split species into kingdoms based on their traits, so animals with similar traits will go to one kingdom and one with different traits will go to another. It helps us see similarities and differences in different species.
Application of surface tension in respiratory system
Answer:
The force of surface tension in the lungs is so great that without something to reduce the surface tension, the airways would collapse after exhalation, making re-inflation during inhalation much more difficult and less effective. Collapse of the lungs is called alectasis.
Explanation:
Describe in your own words, human ovulation and the menstrual cycle
Answer:
Ovulation occurs around 14 days before your period. If your average menstrual cycle is 28 days, you ovulation is on most likely on day 14. If the usual menstrual cycle is 35 days ovulation most likely happens day 21.
Explanation:
hope this helped!
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How do you know that an organism belongs to the animal kingdom?
A. It breaks down things in nature, it can survive in extreme conditions, and has at least one cell.
B. It is a single-celled organism that can make its own food, and that can breathe and move around.
C. It can make its own food, it can breathe and move around, and it has many cells.
D. It cannot make its own food, it can breathe and move around, and it has many cells.
Answer:
D
Explanation:
cuz the first two r bacteria cells since theyre single cells
and the 3rd one is a plant since its an autotroph and makes its own food
the last one is correct cuz its a heterotroph;depends on otehrs for food, and has multiple cells
Explanation:
i think b or d , I will confirm
lab activity blood type pedigree mystery Joseph and rita
The condition of Earth’s atmosphere at a particular time and place is called _________________.
Explanation:
The condition of earths atmosphere at a particular time and place is called weather
A mom, heterozygous for type B blood, has a baby with type AB blood, what possible blood types could the baby's father have?
Select all that apply
O
A
AB
B
Answer:
A
AB
Explanation:
This question involves blood type, which can either be blood type A, B, AB or O in humans. Alleles A (iA) and B (iB) are co-dominant but dominant over allele O (i).
According to this question, a mom who is heterozygous for type B blood i.e. genotype iBi, has a baby with type AB blood. Since the mother contributed the "B" allele, it means that the father contributed the A allele. Only a father with genotype: iAi or iAiA (type A) or iAiB (type AB) can produce such allele.