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Papessa [141]
3 years ago
9

DNA is made up of: Please help thank you

Biology
1 answer:
REY [17]3 years ago
7 0
2 chains and 4 nucleotides
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The optic nerve is formed from fibers of ________.
Karolina [17]

Answer:

Optic Disc

Explanation:

Optic Disc is a portion of the eye, it can be seen as black spot on the eye, it doesn't contain rods. Optic disc is the point of exit for optic nerve.

The optic disc is also known as the optic nerve Head, it is made up of connective and elastic tissue, it is the passage to the nerve fibber bundles and retinal blood vessels it also maintain intra-ocular pressure against a gradient between the intra-ocular and extra-ocular spaces.

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4. The diagram below represents one possible immune response that can occur in the human body.
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A and C only

Explanation:

I'm sorry I don't know how to explain it but trust me its A and C only.

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Which environment will have a negative impact on both cells with a cell wall and cells without a cell wall?
notsponge [240]

The environment that will have a negative impact on both cells with a cell wall and cells without a cell wall is the hypertonic environment.

<h3>What is a cell wall?</h3>

A cell wall is defined as the flexible outer layer of the cell that provides protection for the cell from any physical or chemical stress.

A hypertonic fluid environment is the type of fluid that is highly concentrated than the cell.

Therefore, when a clear is placed in a hypertonic environment, through the process of osmosis, water moves out of the cell.

This affects also cells that do not possess cell wall.

Therefore, the environment that will have a negative impact on both cells with a cell wall and cells without a cell wall is the hypertonic environment.

Learn more about cell here:

brainly.com/question/26122239

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