A biology student creates a table that shows the function of the four major macromolecules.

Question

A biology student creates a table that shows the function of the four major macromolecules.

MACROMOLECULE FUNCTION
lipids transport oxygen in the blood
proteins help with muscle contractions
nucleic acids store and transmit genetic information
carbohydrates provide usable chemical energy for cells

For which macromolecule does the student list an incorrect function?
A.

the lipids, because they are responsible for long-term energy storage
B.

the proteins, because they are responsible for helping plants retain water
C.

the carbohydrates, because they are responsible for the structure of the cell membrane
D.

the nucleic acids, because they are responsible for providing support for the immune system

Answer 1

B. The student lists an incorrect function for proteins, stating that they help with muscle contractions. The correct function for proteins is to act as enzymes, transport molecules, provide structural support, and regulate cell processes, among other functions. Muscle contractions are actually controlled by a specific type of protein called actin and myosin.