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3 years ago

Label the figure below. Word bank: leading strand, lagging strand, DNA

Biology

1 answer:

Natalija [7]3 years ago

4 0

Answer:

DNA can replicate itself because its two strands are complementary. This means that one strand can be used as a template to make the other strand. It happens right before cell division via mitosis or meiosis so that each new daughter cell can have a complete genome.

Before replication can start, the double strands of DNA need to separate from each other. An enzyme called DNA helicase breaks the hydrogen bonds that connect the two strands, allowing them to come apart.

The point where this unzipping starts is called an origin point. Eukaryotic DNA can have more than one origin point, but prokaryotes can only have one.

The points where DNA is currently unwinding are called replication forks.

A comparison of eukaryotic and prokaryotic DNA replication

Hope this helps Have a good day

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In facilitated diffusion, what is the role of the transport proteins?

Alenkinab [10]

Answer:

Explanation:

There is no much more to say than the letter A describes the process of facilitated diffusion.

The normal diffusion ocurres when the solute passes the membrane through the space of the double layer of phospholipids. Particles that are small and apolar can pass trough the membrane without problems.

For bigger or polar particles we need to use a protein system to help them pass into the cytoplasm. That's what we call Facilitated Difusion.

About the other options:

B) That's the explanation about active transport. That happen for every particle who is going against the gradient of concentration.

C) Again: if we are talking about diffusion, there is no energy needed.

D) The Water Molecules suffer the process os osmotic pressure. Water deslocates to the higher gradient of concentration - contraty what the other particles do.

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3 years ago

Los Huesos largos del Cuerpo son

ratelena [41]

Answer:

Spine and other bones SKELETON

Explanation:

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3 years ago

The flow of energy in some australian food chains is modeled in the energy PYRAMID BELOW

r-ruslan [8.4K]

Answer:

C ring-tailed opossums ur welcome

Explanation:

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3 years ago

One of the most consistent and best-documented effects of cigarette smoking during pregnancy is

Alisiya [41]

Answer;

Low birth weight.

One of the most consistent and best documented effects of cigarette smoking during pregnancy is low birth weight.

Explanation;

Smoking during pregnancy has various effects on the fetus, causing a baby to be born early or to have low birth weight which makes it more likely for the baby to get sick and stay in the hospital longer.

Additionally; smoking during and after pregnancy is a risk factor of Sudden Infant Death Syndrome.

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3 years ago

What polysaccharide provides rigidity and strength in plants?

mestny [16]

I believe the polysaccharide that provides rigidity and strength in plants would be cellulose. As this is one of the essential components found in the cell wall of plant cells.

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3 years ago

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