Multiple Choice
If glucose, radioactively labeled in the C-2 position with 14C, is used as a substrate in a yeast extract maintained under strictly anaerobic conditions, what is the location of 14C in the product ethanol?
A) 14CH3-CH2-OH
B) CH3-14CH2-OH
C) CH3-CHOH-14COO-
D) It is released as 14CO2 by pyruvate decarboxylase and never becomes part of ethanol.
E) It is released as 14CO2 by alcohol dehydrogenase and never becomes part of ethanol.
Correct Answer:

Verified
Correct Answer:
Verified
Q59: Which compound(s) is/are a high-energy product(s) of
Q60: Which enzyme acts in the pentose phosphate
Q61: Which statement about gluconeogenesis is FALSE?<br>A) For
Q62: The oxidation of 3 mol of glucose
Q63: Which statement is INCORRECT?<br>A) Aerobically, oxidative decarboxylation
Q65: Explain why P<sub>i</sub> (inorganic phosphate) is absolutely
Q66: Which substrate CANNOT contribute to net
Q67: Which carbon atom in one of the
Q68: When a mixture of glucose 6-phosphate
Q69: If brewer's yeast is mixed with pure