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PilotLPTM [1.2K]
3 years ago
5

Please help it is due at 12

Biology
1 answer:
slamgirl [31]3 years ago
8 0
Where is the question?
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Which enzyme is responsible for ""unzipping"" the dna double helix?
tigry1 [53]

Answer:

Helicase

Explanation:

The DNA double helix is unzipped by the enzyme *HELICASE*. The enzyme breaks the hydrogen bond between the bases thereby causing the strands of the double helicase to unzip. The action of the helicase enzyme uses energy from ATP. The unzipping of the double helix does not occur in a swift move. One end of the DNA molecule with 5'-3' is opened up showing the antiparallel single strands. The end that is opened is termed INITIATION SITE of replication. The opening look like someone standing with legs wide open. The wide opening is called REPLICATION FORK. The single strands of the fork are usually unstable but their stability is maintained by the DNA-binding-proteins. Having opened the double helix, the replication would then continue in the 5'-3' direction of one of the two antiparallel single strands.

5 0
3 years ago
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Oil is a fossil fuel that provides power to sustain a modern lifestyle. Which of these statements best describes a benefit of oi
rewona [7]

Less expensive source of energy is available.

hope this helped, please mark brainliest :)

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3 years ago
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If a cell with 12 chromosomes undergoes mitosis, how many daughter cells result and what is the chromosome number in each daught
VMariaS [17]
Mitosis is a kind of cell division that produces 2 daughter cells that is genetically identical to both the other daughter and the parent cell.

By the word genetically identical, it means that they have the same number of chromosomes.

This process starts by a parent cell doubling their chromosomes, then, it divides, and therefore each daughter cells receive the original number of chromosomes.

Therefore, the answer to this question is 2 cells, 12 chromosomes each.
5 0
3 years ago
What important role does fire play in a grassland biome?
Alenkinab [10]

Fire naturally occurs in a grassland ecosystem and it helps the environment stay healthy and strong. I promotes richer soil as well as gets rid of excess leaves scattered around. After a fire, grassland ecosystems can grow again and be better than they were before.  

6 0
3 years ago
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The student wants to make a model to provide information about cellular respiration. Drag and drop the
quester [9]

Answer:

where? mitochondria

inputs. carbon dioxide and water

outputs. glucose and oxygen

energy resources. chemical bonds

energy result. energy released

im not sure but hope this helps :)))

6 0
3 years ago
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