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Section
III
Questions 18 - 22:
Question 18
C
This is the definition of an enzyme complex
Question 19
B The hydrophilic nature will allow the passage of protons down
the channel, none of the other types would allow this
Question 20
D This is the best answer. The genes will be very nearly
identical.
Question 21
C The energy of the electron
transfer chain is needed to move the protons. Hence it is active transport even
though it does not require ATP
Question 22
C The lack
of oxygen as a final electron acceptor stops the functioning of the electron
transfer chain and hence stops the functioning of ATPsynthase
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