What is happening to the DNA molecule in the figure? (Explain the first step in DNA replication)

Biology

1 answer:

tatuchka [14]3 years ago

4 0

Answer:

As this is DNA replication, this is the unwounding process

Explanation:

In DNA replication, the parent DNA to be replicated is unwound to enable access of the replication machinery (replisome) to this genetic material. The origin of replication will be identified first, which in the prokaryotes is only one, and in the eukaryotes, we have many. This sites are recognized by specific sequences on the genome. after this, melting of the DNA occurs at this origin creating a replication bubble and two replication forks. This allows for the unwinding of the DNA by the enzyme Helicases in the direction of the replication fork. Another enzyme present in this step is also the single strand binding proteins (SSB). These proteins function in the prevention of re-anealing of the unwound DNA strand by attaching themselves to each strands. Another enzyme called the topoisomerases also function here by reducing the torque (twisting) produced upstream of the replication fork as result of DNA unwounding. An example is the gyrase

You might be interested in

How does a hydroelectric dam work?

Nastasia [14]

Answer:

to create a reservoir where water is stored at a given height

Explanation:

The water from the reservoir is allowed to flow over the dam in a controlled way. As the water falls it turns turbines and generates electricity.

4 0

3 years ago

Which levels of exercise intensity are associated with the health benefits of exercise? (select all that apply)?

pentagon [3]

The levels of exercise intensity that are associated with the health benefits of exercise are moderate intensity exercises.
Exercise is a subset physical activity that is planned with a goal of improving or maintaining fitness. Moderate exercise physical activity done on a scale relative to an individual's personal capacity, moderate intensity physical activity is usually 11-14 on a scale of 1 to 20.

7 0

3 years ago

Which organ(s) plays a major role in maintaining homeostasis when toxins build up in the body?

malfutka [58]

Kidney
explaination

The liver, the pancreas, the kidneys, and the brain (hypothalamus, the autonomic nervous system and the endocrine system) help maintain homeostasis. The liver is responsible for metabolizing toxic substances and with signaling from the pancreas maintains carbohydrate metabolism

4 0

3 years ago

Plz Help I will give Brainly

RideAnS [48]

Answer:

first one is active

second is passive

3 0

3 years ago

Why would yellow perch dna be closer to walleye dna? why?

Lunna [17]

Yellow perch DNA would be closer to walleye DNA because they are both in the same category of species of fish. Their genetic make-up would be very similar since they are more closely related to each other than to deer. Again, because they are both species of fish.

4 0

4 years ago