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Biology Year 10๐ŸŒฟ > Exchange Of Materials > Flashcards

Flashcards in Exchange Of Materials Deck (4)
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1
Q

How do cells and humans take in oxygen?

A

Diffusion

2
Q

How do cells take up oxygen?

A

The cell has a large SA/V ratio

There is a high rate of diffusion

3
Q

How do humans take up oxygen?

A

The outside of the body has a small SA/V ratio, therefore diffusion through the body surface isnโ€™t possible.
We take in oxygen and breathe out carbon dioxide . This is a mechanical process.

4
Q

What gases do humans exchange?

A

We uptake oxygen (respiration)

We release carbon dioxide (waste product)