1.10 Exchanging Materials (GCSE Biology)

The following is a GCSE Biology test covering '1.10 Exchanging Materials'

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Question 1

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Why is it easier for small organisms to exchange materials directly with their environment?

How is a steep diffusion gradient maintained in animals?

Which adaptation improves the gas exchange efficiency in animals?

Which feature of the human small intestine aids nutrient absorption?

Cells adapted for diffusion must always have:

A thin exchange surface is advantageous because it:

Which factor is very important for efficient exchange of materials between organisms and their environment?

What is a disadvantage of a decreasing surface area to volume ratio in larger organisms?

How do larger organisms overcome the problem of low surface area to volume ratio?

Stomata in leaves mainly facilitate the exchange of:

As organisms increase in size, their surface area to volume ratio:

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