Question 1

Which of the following best describes the general formula for carbohydrates?

Accepted Answer

$$C_nH_{2n}O_n$$

Question 2

Which polysaccharide is primarily used for energy storage in animals?

Accepted Answer

Glycogen

Question 3

A patient is diagnosed with a genetic disorder that prevents the formation of glycosidic bonds. Which biological process would be most directly affected?

Accepted Answer

Synthesis of disaccharides from monosaccharides

Question 4

Which of the following statements about lipids is correct?

Accepted Answer

They are hydrophobic and do not dissolve in water.

Question 5

Which type of lipid is a major component of cell membranes and is amphipathic?

Accepted Answer

Phospholipids

Question 6

A food label lists a fat as 'solid at room temperature and derived from animals.' Which type of fat is this most likely to be?

Accepted Answer

Saturated fat

Question 7

Which of the following best describes the structure of DNA?

Accepted Answer

A double helix with antiparallel strands running 5’ to 3’ and 3’ to 5’

Question 8

Which of the following is NOT a function of proteins in the body?

Accepted Answer

Storing genetic information

Question 9

A mutation causes a change in the primary structure of a protein. Which level of protein structure is directly affected by this mutation?

Accepted Answer

The sequence of amino acids

Question 10

Which of the following best explains why humans cannot digest cellulose?

Accepted Answer

Humans lack the enzyme to break the specific glycosidic bonds in cellulose.

Question 11

Which of the following is a correct pairing of a biomolecule and its monomer?

Accepted Answer

Protein – Amino acid

Question 12

Which of the following best describes a dehydration synthesis reaction?

Accepted Answer

A reaction that forms polymers by removing water

Question 13

Which of the following statements about nucleic acids is true?

Accepted Answer

DNA contains the bases adenine, guanine, cytosine, and thymine.

Question 14

A scientist is studying a molecule with the formula $$C_{12}H$$_{22}$$O_{11}$. This molecule is most likely a:

Accepted Answer

Disaccharide

Question 15

Which of the following is a function of cholesterol in animal cells?

Accepted Answer

It is a component of cell membranes and serves as a precursor for steroid hormones.

Question 16

Which of the following best distinguishes saturated fats from unsaturated fats?

Accepted Answer

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.

Question 17

A protein is exposed to high heat and loses its functional shape. This process is called:

Accepted Answer

Denaturation

Question 18

Which of the following best describes the backbone of a nucleic acid strand?

Accepted Answer

Alternating sugar and phosphate groups

Question 19

Which of the following is a real-life example of a hydrolysis reaction in the human body?

Accepted Answer

Digesting starch into glucose molecules

Question 20

Which of the following best explains why trans fats are considered unhealthy?

Accepted Answer

They have a configuration similar to saturated fats and increase the risk of heart disease.

Biomolecules: Structure, Types, and Functions

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