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3 years ago

The skin pigment ____ is responsible for the skin color of dark-skinned people.

Biology

2 answers:

s2008m [1.1K]3 years ago

4 0

I believe it’s melanin , if I’m not mistaken.

stira [4]3 years ago

3 0

I’m pretty sure it is Melanin

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3. Which statement would be true of a membrane-bound protein that works in conjunction with a sodium–potassium pump during secon

kow [346]

Answer:

Explanation:

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2 years ago

The slope is also know as

siniylev [52]

Answer:

rise over run

Explanation:

rise refers to the number of units going u or down a graph

run refers to the number of units going left or right

it is seen as so; $\frac{rise}{run}$ , $\frac{ delta y}{deltax}$ , or $\frac{y_{2} - y_{1}}{x_{2} - x{1}}$

Don't panic when I included "delta". Delta, it refers/means the small mathematical triangle found beside the rise and run symbols of y and x

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2 years ago

HELP!!!! Restriction maps illustrate the lengths of DNA fragments between restriction sites. Which of the following information

balandron [24]

The wording of this is confusing. I think it’s A and B and I’m hesitant say that it’s also C but only if you know the mutation and the gene.

Also for A you would only know a partial sequence of the gene.

6 0

3 years ago

Which source creates the most direct pollution?

Otrada [13]

Answer:

Water pollution is one of the most common type of pollution that leads to the deterioration of the water quality mainly due to the man-made interference. Direct and indirect pollution are two of its types. Direct pollution as the term suggests refers to the direct flow of pollutants in the water in contrast to the indirect pollution that accounts for the transport of pollutants eventually to the water body.

Explanation:

Direct pollution is characterized by the release of toxic fluid directly in the water body. The main source of this type of pollution are the toxic pollutants from the large factories. Some of the other sources includes solid waste from the household activities and waste from agricultural practice like fertilizers, and the waste generated by the waste water treatment plant.

7 0

3 years ago

9. Which structure helps animal cells maintain their shape?

ludmilkaskok [199]

Answer:

D. Cytoskeleton

Explanation:

It is really none of these answers. The correct answer would be a microtubule which is a component of the cytoskeleton which is in the cytoplasm.

The Cell Walls are only in plant cells so that won't work. So, A wouldn't work.

Chromosomes are the things that both your parents give you as genes. They have nothing to do with keeping the structure of the cell alright.

Cytoplasm cannot be a answer choice because, the thing is in it but, it doesn't do anything with it. So C wouldn't work either

The correct answer is microtubule however, it is a component of cytoskeleton so therefore, that is your answer.

Reference the picture below:

4 0

3 years ago