Question

Which molecule would be the most affected by limited nitrogen?
myofibrillar proteins in muscle
glucose molecules in starch
fat molecules surrounding organs
cellulose molecules in plant cell walls

Answer 1

Myofibrillar proteins in muscle.

Reason: Proteins are built from amino acids that contain nitrogen, so limited nitrogen directly restricts protein synthesis. Starch (glucose), cellulose, and most storage fats (triglycerides) are primarily C, H, and O and are far less affected by nitrogen availability.