Black-and-white camera film, in the old days of film photography, was very sensitive to blue light but not to red light. Blue skies would often show very little detail, because the film couldn’t record all that it was seeing. To compensate, photographers would put a red filter on the lens, darkening the sky enough that the film could record its fluffy clouds.

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#Question id: 1000

#Unit 1. Molecules and their Interaction Relevant to Biology

 Which of the following is (are) true of the B oxidation of long-chain fatty acids?

1. The enzyme complex that catalyzes the reaction contains biotin.

2. FADH2 serves as an electron carrier.

3. NADH serves as an electron carrier.

4. Oxidation of an 18-carbon fatty acid produces six molecules of propionyl-CoA.

5. Oxidation of a 15-carbon fatty acid produces at least one propionyl-CoA.

#Question id: 999

#Unit 1. Molecules and their Interaction Relevant to Biology

The balanced equation for the degradation of CH3(CH2)10COOH via the B-oxidation pathway is:

#Question id: 998

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements apply (applies) to the B oxidation of fatty acids?

1.  The process takes place in the cytosol of mammalian cells.

2.  Carbon atoms are removed from the acyl chain one at a time.

3.  Before oxidation, fatty acids must be converted to their CoA derivatives.

4.  NADP+ is the electron acceptor.

5.  The products of B oxidation can directly enter the citric acid cycle for further oxidation.

#Question id: 997

#Unit 1. Molecules and their Interaction Relevant to Biology

Complete oxidation of 1 mole of which fatty acid would yield the most ATP?

#Question id: 996

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is (are) true of the oxidation of 1 mol of palmitate (a 16-carbon saturated fatty acid; 16:0) by the B-oxidation pathway, beginning with the free fatty acid in the cytoplasm?

1. Activation of the free fatty acid requires the equivalent of two ATPs.

2. Inorganic pyrophosphate (PPi) is produced.

3. Carnitine functions as an electron acceptor.

4. 8 mol of FADH2 are formed.

5. 8 mol of acetyl-CoA are formed.

6. There is no direct involvement of NAD+.

#Question id: 995

#Unit 1. Molecules and their Interaction Relevant to Biology

Saturated fatty acids are degraded by the stepwise  reactions of B oxidation, producing acetyl-CoA. Under aerobic conditions, how many ATP molecules would be produced as a consequence of removal of each acetyl-CoA?