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Papessa [141]
2 years ago
11

Before DNA replication can occur the double stranded DNA must first

Biology
1 answer:
Taya2010 [7]2 years ago
4 0

Answer/Explanation:

First, initiator protein unwinds a short stretch of the DNA double helix. <u>The length of the DNA double helix about to be copied must be unwound. </u> In addition, the two strands must be separated, much like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases.   Once the DNA strands have been unwound, they must be held apart to expose the bases so that new nucleotide partners can hydrogen-bond to them. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.

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Archaea are different from bacteria in that Archaea A. have structures that are more similar to bacterial structures. B. have mo
Dmitrij [34]

A i wrong because it says that they are similar.


B is wrong because archaea are phylogenetically similar to eukaryotes


C is also true because archaea are more phylogenetically similar to eukaryotes than bacteria


D is true because the Archaea did develop before Bacteria


so your answer is C because D says that archaea are different from bacteria because the archaea domain developed first, it does not say that they are dissimilar because of their appearance

5 0
3 years ago
What is an indicator of healthy soil?
trasher [3.6K]
A balance of organic and inorganic materials
6 0
2 years ago
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Con cu ăn no không lollll
quester [9]

Answer:

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8 0
3 years ago
A DNA mutation changes the shape of the extracellular domain of transmembrane receptor protein A produced by the cell. Which of
Tatiana [17]
<h2>a) is the correct option </h2>

Explanation:

The extracellular domain of the transmembrane receptor protein acts as binding site for primary messenger molecule whereas the transmembrane domain holds the receptor within membrane and the cytosolic domain has intrinsic tyrosine kinase activity, all these helps in proper cell signaling

If because of any mutation there is change in shape of the extracellular domain then that molecule that normally binds to the receptor protein will no longer attach hence cellular response will be deactivated

8 0
3 years ago
When the archer releases the arrow, the [blank] energy in the bow string transforms into [blank] energy for the arrow.
Kobotan [32]

Answer:

potential energy, kinetic energy

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potential energy is the energy held by an object because of its position. kinetic energy is energy in motion. when the bow is being drawn back it has potential energy because of its position and that at any moment it can be converted into kinetic energy.

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