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m_a_m_a [10]
3 years ago
13

The unwinding of DNA at the replication fork causes twisting and strain in the DNA ahead of the fork, which is relieved by an en

zyme called __________.
Biology
2 answers:
Eddi Din [679]3 years ago
8 0

Answer:

Topoisomerase

Explanation:

Topoisomerase is an enzyme that is involved in the unwinding of Deoxyribonucleic acid (DNA).  They are involved in double stranded DNA and they help to relieve the making of supercoils.

Topoisomerase play an important role during DNA replication, as the prevent the the twisting of the DNA double helix ahead of the replication fork. In other words, they ensure that the DNA open up for unwinding without being tightly wound.

algol [13]3 years ago
8 0

Answer:

The correct answer is "topoisomerase".

Explanation:

Topoisomerase is an enzyme that is essential to perform DNA replication and transcription. Topoisomerase catalyzes the overwinding or underwinding of DNA, for which they are know as "the magicians of the DNA world" because they relieve the twisting that are formed in the DNA ahead of the fork during replication. Topoisomerase are needed because of the intertwined nature of its double-helical structure

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A scientist uses material in her lab to cut a DNA sample into fragments.What process is the scientist using
ycow [4]

The process used by the scientist who uses a material to cut DNA sample into fragments is gel electrophoresis.

<h3>What is gel electrophoresis?</h3>

Gel electrophoresis is a biological method for the separation and analysis of large molecules by migrating a colloidal solution of them through a gel medium.

Gel electrophoresis separates small molecules of DNA or protein based on their charge and size.

Therefore, the process used by the scientist who uses a material to cut DNA sample into fragments is gel electrophoresis.

Learn more about gel electrophoresis at: brainly.com/question/9437877

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7 0
2 years ago
________ are cognitive in nature, have an unclear, general cause, and last for several hours or days.
Rudiy27

Answer:

Moods

Explanation:

A mood is a feeling or emotion that<em> prevails in a person at any particular time, they are general </em>and they can't be distracted by facial expressions.

I hope you find this information useful and interesting! Good luck!

3 0
3 years ago
How would the plants in a specific environment be impacted if there was a sudden drop in the amount of bacteria present in that
shtirl [24]
When bacteria decompose, they leave behind nutrients. These nutrient then filter unto the roots of the plants via the water that it sucks up. A loss in certain nutrients could be the death of this plant.

8 0
3 years ago
Describe how your peripheral nervous system and central nervous system were involved in simple activity you performed today
dezoksy [38]
<span>The central nervous system (CNS) and peripheral nervous system (PNS) work together in a multitude of ways. The (PNS) is ultimately the extension of the (CNS)</span>
5 0
3 years ago
"In genetic modifications, DNA inserted can come from _____ ." any organism containing the DNA of interest only the same plasmid
liq [111]

Answer:

<h2> any organism containing the DNA of interest</h2>

Explanation:

  • Such type of process in which the modification of the genes of the organisms takes place is known as genetic modification and also called genetic manipulation or genetic engineering.
  • In such type of the process, the branch of biological science that is known as biotechnology is used.
  • In this mechanism, genes of interest are separated from the certain organism and then this gene of interest is inserted into the host organism and such type of DNA that is formed after the addition of foreign genes or DNA is called recombinant DNA.
  • Such type of DNA is used in the production of genetically modified organisms and some other fields for the benefit of human beings.
8 0
3 years ago
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