Assertion : Smaller the organism,higher is th | vedclass

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Question

(A) The Basal Metabolic Rate $(BMR)$ is defined as the energy requirement of the body at rest. Smaller organisms have a higher surface-area-to-volume

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

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(A) The Basal Metabolic Rate $(BMR)$ is defined as the energy requirement of the body at rest. Smaller organisms have a higher surface-area-to-volume ratio,leading to greater heat loss and consequently a higher $BMR$ per gram of body weight to maintain homeostasis.Metabolic rate is directly correlated with physiological parameters like heart rate. $A$ six-month-old baby has a significantly higher metabolic demand and a faster heart rate ($70-190$ beats/minute) compared to an elderly person ($60-100$ beats/minute).Therefore,both statements are correct,and the higher heart rate in a baby serves as a physiological example supporting the higher metabolic rate observed in smaller organisms.

Assertion : Smaller the organism,higher is the rate of metabolism per gram weight.
Reason : The heart rate of a six-month-old baby is much higher than that of an old person.

Similar Questions

Statement $P$: The various types of biochemical reactions occurring in every cell of a living organism are collectively called metabolism.
Statement $Q$: Growth occurs when the rate of anabolic processes is greater than the rate of catabolic processes.

What happens when entropy increases?

Metabolism is the sum total of all chemical reactions occurring in our body. Explain.

The total heat content of a system is known as:

What are the various types of biochemical reactions occurring collectively in the cells of a living organism called?

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Assertion : Smaller the organism,higher is the rate of metabolism per gram weight.Reason : The heart rate of a six-month-old baby is much higher than that of an old person.