A) What macromolecule is the primary source of energy for living cells? (1 point)

Proteins
Lipids
Carbohydrate
Nucleic acids

Carbohydrates are the primary source of energy for living cells.

A) Which macromolecule is primarily responsible for storing genetic information in cells? (1 point)

carbohydrates
lipids
proteins
nucleic acids

Nucleic acids, specifically DNA (deoxyribonucleic acid), are primarily responsible for storing genetic information in cells.

A) Which macromolecule serves as the main structural component of cell membranes? (1 point)

Lipids
Proteins
Carbohydrates
Nucleic Acids

Lipids serve as the main structural component of cell membranes.

A) What are the components of each macromolecule? What are they made of? Choose all that apply. (4 points)

Carbon Hydrogen Oxygen Nitrogen Phosphorous
Carbohydrate
Protein
Lipid
Nucleic Acid

The components of each macromolecule are:

Carbohydrate: Carbon, Hydrogen, Oxygen

Protein: Carbon, Hydrogen, Oxygen, Nitrogen, and sometimes Sulfur

Lipid: Carbon, Hydrogen, Oxygen

Nucleic Acid: Carbon, Hydrogen, Oxygen, Nitrogen, and Phosphorus