Question

Even though cellular macromolecules contain a large number of carbon and hydrogen atoms, they are not all spontaneously converted into CO₂ and H₂O. This absence of spontaneous combustion is due to the fact that biological molecules are relatively __________ and an input of energy is required to reach lower energy states.

(a) large
(b) polar
(c) stable
(d) unstable

Answer 1

Biological macromolecules are relatively stable and require an input of energy to reach lower energy states.

Step-by-step explanation:

Biological macromolecules contain a large number of carbon and hydrogen atoms but they do not spontaneously convert into CO₂ and H₂O. This is because biological molecules are relatively stable and require an input of energy to reach lower energy states. Stability allows macromolecules to maintain their structure and function within cells.