BI-398
Diffusion
Biology · Secondary 3 · Hard · Diffusion
The table shows absorption of two substances from the small intestine in the presence and absence of oxygen.
Substance With O / units Without O / units
X 6.5 2.1
Y 2.0 2.0
Which conclusion about the absorption of X and Y is correct?
Substance With O / units Without O / units
X 6.5 2.1
Y 2.0 2.0
Which conclusion about the absorption of X and Y is correct?
- X is absorbed by active transport and diffusion; Y mainly by diffusion
- Both X and Y are absorbed only by active transport
- Both X and Y are absorbed only by diffusion
- X is absorbed only by active transport; Y only by diffusion
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