During the first chemical reaction of the Krebs cycle, Acetyl CoA combines with which of the following....?

Question

to form citiric acid?

A. Pyruvate

B. A 4-carbon compound

C. Glucose

D. Carbon dioxide

E. A 5-carbon compound

Answer 1

B.  Acetyl CoA (2 carbons) combines with 4-carbon oxaloacetic acid, which is the last result of the previous turn of the Krebs cycle to form 6-carbon citric acid, the first compound in the new cycle which is why it is also called the Citric Acid Cycle.

Answer 2

well: you know  Biology is Very important  thing of

course that would be  Science & Mathematics in

Chemistry  Elements  with answer (D)  Carbon Dioxide

Answer 3

B. 4 Carbon compound

Oxaloacteate (4C) + Acetyl CoA (2C*) -------- Citrate (6C) + CoA

* # of C atoms in acetyl group only

Answer 4

Oxaloacetate which is a 4-carbon compound.

Answer 5

b. A 4-carbon compound(oxaloacetate)