Question

A black bear’s diet follows: 80% of energy from plants, 15% of energy from insects, and 5% of energy from animal matter what biomolecule does this black bear mainly survive on?

A: carbohydrates
B: lipids
C: proteins
D: nucleic acids

Answer 1

A black bear's diet, which is predominantly plant-based, suggests that it mainly survives on carbohydrates, as plants are rich in these biomolecules. The correct option is A: carbohydrates

Step-by-step explanation:

The question asks about the type of biomolecule a black bear primarily survives on, given its diet consists mainly of plants, with a smaller proportion of insects and animal matter. It can be inferred that the black bear mainly gets its energy from carbohydrates. This is because plants, which make up 80% of the bear's diet, are rich in carbohydrates. These macromolecules are broken down during digestion into simple sugars that provide energy for cellular functions.

While lipids and proteins are also part of the bear's diet, they do not represent the primary source of energy; lipids are typically stored for energy reserves and insulation, and proteins are mainly used for the growth and repair of tissues, rather than for immediate energy. Nucleic acids, such as DNA and RNA, are essential for genetic information and are not significant sources of energy. The correct option is A: carbohydrates