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liubo4ka [24]
3 years ago
7

_is used to help substances enter or exit the cell membrane

Biology
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer:idk

Explanation:idc

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Are viruses composed of cells?
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Answer:

No

Explanation:

Viruses are not made out of cells. A single virus particle is known as a virion, and is made up of a set of genes bundled within a protective protein shell called a capsid. Certain virus strains will have an extra membrane (lipid bilayer) surrounding it called an envelope.

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Select the correct answer. Burning fossil fuels releases CO2 into the atmosphere. What potential threat can it cause to Earth? A
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(A) A RISE IN GLOBAL TEMPERATURES

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An allele that expresses itself in a heterozygote is a(n)
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The answer is C. Dominant allele
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3 years ago
Select all the correct answers.<br> Which two statements are true for the leading strand in DNA?
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Question: Which two statements are true for the leading strand in DNA?

It is synthesized toward the replication fork.

It is synthesized in the 3′ to 5′ direction.

It is synthesized away from the replication fork.

It is synthesized in the 5′ to 3′ direction.

Answer:

The two statements that are true for the leading strand in DNA are "it is synthesized toward the replication fork and it is synthesized in the 5′ to 3′ direction"

Explanation:

Leading strand in DNA is the strand of new DNA being synthesized in the same direction where the replication fork is moving. The movement of replication fork allows the access of template for the new DNA. The DNA synthesis is continuous in the leading strand. It is synthesized in the 5' to 3' as DNA synthesis always takes place in this direction. This is because dNTP ( deoxyribonucleoside triphosphate) provides free 3' OH group where new dNTP can be added by the enzyme DNA polymerase.

3 0
3 years ago
What can directly lead to unconformity on an exposed rock?
Scorpion4ik [409]
The answer is B. Uneven rock layer.
Uneven rock layer can directly lead to nonconformity on an exposed rock. Usually the rocks are layered evenly. When the rocks are uneven it will be exposed and show different kind of rocks.
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