1. Which of the following can be produced through the pentose phosphate pathway?

ID: 78020 • Letter: 1

Question

A. ATP

B. pyruvate

C. NADPH

D. more than one of the above

2. Each of these amino acids is paired with its degradation intermediate except

A. serine --> pyruvate

B. lysine --> succinyl CoA

C. asparagine --> oxaloacetate

D. arginine --> alpha-ketoglutarate

3.Proline biosynthesis starts with the metabolic intermediate

A. oxaloacetate

B. a-ketoglutarate

C. pyruvate

D. 3-phosphoglycerate

4. Which of these cofactors is NOT a one carbon carrier?

A. THF

B. TPP

C. SAM

D. biotin

5. Glycine has pKa values of 2.1 and 9.0. For which pH would it BEST serve as a buffer?

A. 11

B. 8.3

C. 5.5

D. 3.1

E. 2.3

1) Which of the following can be produced through the pentose phosphate pathway

NADPH. end product of this PPP is substrate or intermediates of glycolysis.

2) Each of these amino acids is paired with its degradation intermediate except

lysine --> succinyl CoA

3) Proline biosynthesis starts with the metabolic intermediate

a-ketoglutarate.

Which of these cofactors is NOT a one carbon carrier?

TPP.

5) Glycine has pKa values of 2.1 and 9.0. For which pH would it BEST serve as a buffer.

buffering capacity is maximum when pH = pKa. and pKa = pKa1 + pKa2 /2 = 2.1+9 /2 = 5.55

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