Question 1

Which of the following best describes the primary function of glycogen in animals?

Accepted Answer

It serves as an energy storage molecule.

Question 2

A molecule with the formula $$C_{6}H$$_{12}$$O_{6}$ is most likely a:

Accepted Answer

Monosaccharide

Question 3

Which of the following statements about lipids is TRUE?

Accepted Answer

Lipids are used for long-term energy storage and insulation.

Question 4

Which element is found in all proteins but NOT in carbohydrates or lipids?

Accepted Answer

Nitrogen

Question 5

A patient is diagnosed with a genetic disorder that affects the structure of their cell membranes. Which macromolecule is most likely involved?

Accepted Answer

Lipids

Question 6

Which of the following is a correct pairing of monomer and polymer?

Accepted Answer

Nucleotide – RNA

Question 7

Which macromolecule is responsible for speeding up chemical reactions in the body, and what is the general name for these molecules?

Accepted Answer

Proteins; enzymes

Question 8

A food sample is tested and found to contain nitrogen, but no phosphorus. Which macromolecule is most likely present?

Accepted Answer

Protein

Question 9

Which of the following best explains why unsaturated fats are liquid at room temperature while saturated fats are solid?

Accepted Answer

Unsaturated fats have at least one double bond, causing kinks in the fatty acid chains.

Question 10

Which of the following is NOT a function of proteins?

Accepted Answer

Storing genetic information

Question 11

Which macromolecule contains the elements C, H, O, N, and P, and is responsible for storing and transmitting hereditary information?

Accepted Answer

Nucleic acid

Question 12

A scientist isolates a molecule with a phosphate group, a five-carbon sugar, and a nitrogenous base. This molecule is a:

Accepted Answer

Nucleotide

Question 13

Which of the following foods would be the best source of polysaccharides for energy storage in humans?

Accepted Answer

Pasta

Question 14

Which of the following best describes the relationship between amino acid sequence and protein function?

Accepted Answer

The sequence of amino acids determines the protein's shape, which determines its function.

Question 15

Which of the following is a function of cellulose in plants?

Accepted Answer

Structural support in cell walls

Question 16

A mutation causes a cell to be unable to produce chitin. Which organism would be most affected?

Accepted Answer

An insect

Question 17

Which of the following best explains why DNA and RNA are classified as nucleic acids?

Accepted Answer

They are polymers made of nucleotide monomers.

Question 18

Which macromolecule would be most directly affected if a person's diet lacked essential amino acids?

Accepted Answer

Proteins

Question 19

Which of the following is a correct description of a saturated fatty acid?

Accepted Answer

It contains no double bonds between carbon atoms.

Question 20

A student is analyzing a macromolecule and finds it contains sulfur. Which macromolecule is it most likely to be?

Accepted Answer

Protein

The Molecules of Cells: Carbohydrates, Lipids, Proteins, and Nucleic Acids

Study Guide - Practice Questions