Biochem 210 Module 7 Update Questions and

Biochem 210 Module 7 Update Questions and
Cellular respiration is the process of cells taking ___ and producing ___ to generate
energy. - CORRECT ANSWER: O2; CO2
 Consider the fatty acid which has 20 carbons (below).
A. How many cycles of beta-oxidation are required? Briefly explain.
B. How many acetyl-coA are produced. Briefly explain.
C. How many NADH and FADH2 are produced from beta-oxidation (only) of this
molecule? - CORRECT ANSWER: A. 9 cycles are required. Each cycle removes 2-
carbon units, and the final cycle produces 2 acetyl groups.
B. 10 acetyl-coA groups are produced. 2 are produced on the last cycle.
C. 9 NADH and 9 FADH2 molecules are produced. Each round produces 1 NADH and
1 FADH2.
 Glucose contains __(A)__ carbon atoms. The oxidation of a glucose molecule utilizes
__(B)__ ATP. Later, the __(C)__ 3-carbon products of glycolysis produce __(D)__ ATP
by direct phosphorylation, which gives a net yield of 2 ATP. In addition, __(E)__ NADH
are produced in glycolysis.
Word bank: one, two, three, four, five, six - CORRECT ANSWER: (A) six
(B) two
(C) two
(D) four
(E) two
 Glucose contains __(A)__ carbon atoms. The preparatory phase of glycolysis consists
of __(B)__ steps. The oxidation of glucose molecules utilizes two ATP molecules. Later,
the two __(C)__-carbon products go glycolysis produce __(D)__ ATP by direct
phosphorylation, which gives a net yield of two ATP. In addition, __(E)__ NADH are
produced in glycolysis.
Word bank: one, two, three, four, five, six - CORRECT ANSWER: (A) six
(B) five
(C) three
(D) four
(E) two
 How is ATP used in the initial steps of glycolysis? - CORRECT ANSWER: source for
phosphorylation