Question

Which of the following can be considered as parameter of old age?

• A. Slowing of metabolism
• B. End of reproductive phase
• C. Juvenile stage
• D. Enlargement of thymus

Answer 1

Answer: (A)

Slowing of metabolism

• Age is one of the most important factor for changes in energy metabolism. The basal metabolic rate decreases almost linearly with age.
• The volume of skeletal musculature decreases and the percentage of fat tissue increases with age.
• It is shown that a decrease in muscle mass relative to the total body may be wholly responsible for the age-related decrease in basal metabolic rate.

So, the correct answer is 'Slowing of metabolism'.