Respiration in Plants Question 42
42. In which one of the following do the two names refer to one and the same thing ? [2003]
(a) Tricarboxylic acid cycle and urea cycle
(b) Krebs cycle and Calvin cycle
(c) Tricarboxylic acid cycle and citric acid cycle
(d) Citric acid cycle and Calvin cycle
Show Answer
Answer : c
Hints & Solutions
(c) TCAcycle is so called because the first stable product formed in the cycle is a tricarboxylic acid molecule, that is, citric acid. Hence, the name citric acid cycle. It is also called the Krebs cycle as it was discovered by Krebs.
