Question

Which of the following is a catabolic pathway?

• A. Breakdown of glucose into lactic acid in skeletal muscle
• B. Formation of proteins from amino acids
• C. Formation of cholesterol from acetic acid
• D. Formation of glycogen from glucose

Answer 1

Answer: (A)

In the catabolic pathway, there is break down of large molecules, for example, lipids, polysaccharides, nucleic acids and protein into small molecules such as fatty acids, monosaccharides, nucleotide and amino acids, respectively. Formation of protein, cholesterol and glycogen is the anabolic process, which is made from amino acids, acetic acid and glucose, respectively.
In skeletal muscle reaction, break down of glucose occurs into lactic acid, which is a catabolic reaction and occurs in an anaerobic environment.