Question 1

Which of the following best describes the process of dehydration synthesis in the formation of biological polymers?

Accepted Answer

It removes a water molecule to join two monomers, forming a covalent bond.

Question 2

A patient is diagnosed with a genetic disorder that prevents the formation of disulfide bonds in proteins. Which level of protein structure would be most directly affected?

Accepted Answer

Tertiary structure

Question 3

Which of the following functional groups is found in all amino acids and is responsible for their acidic properties?

Accepted Answer

Carboxyl group $$(-COOH)$$

Question 4

A triglyceride is formed from which combination of molecules?

Accepted Answer

Three fatty acids and one glycerol

Question 5

Which of the following best explains why unsaturated fats are generally liquid at room temperature?

Accepted Answer

Their fatty acid chains are bent due to double bonds, preventing close packing.

Question 6

Which of the following equations correctly represents the hydrolysis of sucrose?

Accepted Answer

$$C_{12}H$$_{22}$$O_{11} + H_2O \rightarrow C_6H_{12}O_6$ + C_6H_{12}O_6$

Question 7

Which of the following is a function of carbohydrates in the human body?

Accepted Answer

Providing energy for metabolism

Question 8

A mutation causes a change in the R-group of an amino acid in a protein. Which property of the protein is most likely to be affected?

Accepted Answer

The solubility and folding of the protein

Question 9

Which of the following statements about phospholipids is correct?

Accepted Answer

They form a bilayer in water due to their hydrophilic heads and hydrophobic tails.

Question 10

Which of the following best describes the role of ATP in cellular metabolism?

Accepted Answer

It provides energy for cellular processes by releasing a phosphate group.

Question 11

A patient has a diet high in saturated fats. Which of the following health risks is most directly associated with this dietary pattern?

Accepted Answer

Elevated LDL cholesterol and heart disease

Question 12

Which of the following is NOT a correct pairing of a biological molecule with its monomer?

Accepted Answer

Lipid – Nucleotide

Question 13

Which of the following best explains why enzymes are highly specific for their substrates?

Accepted Answer

The active site of the enzyme has a unique shape that fits only specific substrates.

Question 14

Which of the following is a correct complementary base pairing in DNA?

Accepted Answer

Adenine – Thymine

Question 15

A scientist is studying a molecule with the formula $$C_{6}H$$_{12}$$O_{6}$. Which class of biological molecule does this most likely represent?

Accepted Answer

A monosaccharide

Question 16

Which of the following statements about hydrolysis is correct?

Accepted Answer

It breaks a polymer into monomers by adding a water molecule.

Question 17

Which of the following is a function of cholesterol in the body?

Accepted Answer

It serves as a precursor for steroid hormones.

Question 18

Which of the following best describes the difference between cellulose and starch?

Accepted Answer

Starch is digestible by humans, while cellulose is not.

Question 19

A mutation causes an enzyme to lose its ability to bind its substrate. Which property has most likely changed?

Accepted Answer

The enzyme's active site shape

Question 20

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

Accepted Answer

Storing genetic information

Biological Molecules: Structure, Function, and Relevance in Anatomy & Physiology

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