NEET 2013 Biology question

Biology Respiration in Plants NEET 2013

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins ?

(1)Glucose-6-phosphate
(2)Fructose 1, 6-bisphosphate
(3)Pyruvic acid
(4)Acetyl CoACorrect

Answer: (4)

Solution

Carbohydrates are broken down by glycolysis to pyruvic acid, which is oxidatively decarboxylated to acetyl CoA. Fats are hydrolysed to glycerol and fatty acids; fatty acids undergo beta-oxidation to acetyl CoA (glycerol enters glycolysis as PGAL). Proteins are hydrolysed to amino acids which, after deamination, enter

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Question ID VK-091407