All biochemical processes which occur in an organism's body are called...

Which of the following statements best describes metabolism?

In living organisms,complex traits are the result of:

If the energy level of the product $(P)$ is lower than the energy level of the substrate $(S)$, then the process is:

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.

Catabolic and anabolic pathways are often coupled in the cell. Why?