Question

dna and rna have different roles in the cell. what is the primary function of dna?
to store and transmit genetic information.
to provide a source of quick energy.
to synthesize proteins.
to catalyze metabolic reactions.

which of the following correctly pairs a biological macromolecule with its primary function?
proteins - structural support and enzymatic activity
nucleic acids - short - term energy storage
lipids - storage of genetic information
carbohydrates - enzymatic catalysis

starch and glycogen are both polysaccharides. what is the primary difference in their function in living organisms?
starch provides structural support in plants, while glycogen provides structural support in animals.
starch is the primary energy storage molecule in plants, while glycogen is in animals.
starch is the primary energy storage molecule in animals, while glycogen is in plants.
starch is found in the cell walls of bacteria, while glycogen is found in the cell walls of fungi.

which of the following statements accurately describes the relationship between monomers and polymers of biological macromolecules?
monomers are complex molecules that contain multiple repeating units of polymers.
polymers are large molecules made up of repeating units of smaller molecules called monomers.
polymers are broken down into monomers through a process called dehydration synthesis.
monomers are joined together to form polymers through a process called hydrolysis.

Explanation:

1. DNA's main job is storing and transmitting genetic info. Other options are functions of different molecules.
2. Proteins have structural and enzymatic roles. Nucleic acids store genetic info, lipids are for energy storage and membrane - building, and carbohydrates are for energy.
3. Starch is plant energy storage and glycogen is animal energy storage.
4. Polymers are made of repeating monomer units. Monomers combine via dehydration synthesis and polymers break via hydrolysis.

Answer:

1. To store and transmit genetic information.
2. Proteins - structural support and enzymatic activity
3. Starch is the primary energy storage molecule in plants, while glycogen is in animals.
4. Polymers are large molecules made up of repeating units of smaller molecules called monomers.