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Katyanochek1 [597]
3 years ago
6

DNA < | > Which model best represents strand 2? Below is a model of strand 1 of a DNA double helix. Remember, all models h

ave limitations.
​

Biology
1 answer:
zheka24 [161]3 years ago
4 0

Answer:

Correct answer is A since it is the only one that is oppositely faced and the shape of the boxes is same.

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Rivers and streams are biodiverse ecosystems that are sensitive to change. please select the best answer from the choices provid
mylen [45]

It is true that rivers and streams are biodiverse ecosystems that are sensitive to change. Details about rivers and streams can be found below.

<h3>What is river and stream?</h3>

A river is a large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, oftentimes ending in another body of water, such as an ocean or in an inland sea.

On the other hand, a stream is a small river or a body of moving water confined by banks.

Rivers and streams are both freshwater ecosystems, hence, tend to respond to changes in their environment caused by anthropogenic activities.

Therefore, it is true that rivers and streams are biodiverse ecosystems that are sensitive to change.

Learn more about rivers and streams at: brainly.com/question/10904801

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2 years ago
What is the function of the Type II alveolar cell?
hoa [83]

Answer: The function of the Alveolar type II cells is that they secrete a lipoprotein material that is known as surfactant.  The  primary function of the surfactant is to reduce the surface tension in the alveoli.

Explanation:

Type II have an important function Type II as they secrete pulmonary surfactant in order to lessen the surface tension of water and allows the membrane to separate, therefore increasing its capability to exchange gases.

6 0
3 years ago
A point mutation changes the DNA sequence CGA to CGT, but the same protein is still produced. Which point mutation occurred? A.
iren [92.7K]
The answer is <span>C.silent.

Nonsense, missense, silent, and frameshift mutations are point mutations. The point mutations are the change in a single nucleotide base on the DNA molecule. In a missense mutation, the change in a single nucleotide base results in a codon coding for a different amino acid. In a nonsense mutation, the change in a single nucleotide results in a stop codon or in a nonsense codon. Frameshift mutation, due to addition or deletion of a base, results in the change of reading frame and totally different translation. In all these cases, the change could lead to different of nonfunctional protein translation.
Silent mutation, on the other, means that change in a nucleotide base will no affect amino acid. It will result in a different codon, but the one that code for the same amino acid, so the same protein will be produced.

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7 0
4 years ago
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During which of the following processes do vesicles sometime fuse with lysosomes
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Vesicles sometimes fuse with lysosomes in the process of endocytosis. Endocytosis absorbs molecules by r<span>emoving portions of the plasma membrane and taking them inside the cell.</span>
6 0
3 years ago
What is a good option for my biome project?
artcher [175]

Answer:

Tundra, taiga, coral reef, desert.

Explanation:

7 0
3 years ago
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