Question

The group of organic macromolecules that have roles including enzymes, and structural components in cells and always contain nitrogen are _______.

a
carbohydrates
b
nucleic acids
c
lipids
d
proteins

Answer 1

The correct answer is **d) proteins**. Proteins are a group of organic macromolecules that serve various functions, including acting as enzymes and providing structural support in cells, and they always contain nitrogen in their amino acid building blocks.