Question 1

Which process is responsible for assembling polymers from monomers in biological systems?

Accepted Answer

Dehydration (condensation) synthesis

Question 2

A student is studying a carbohydrate with the chemical formula $$C_6H_{12}O_6$. Which category does this molecule belong to?

Accepted Answer

Monosaccharide

Question 3

Which of the following statements best explains why lipids are hydrophobic?

Accepted Answer

They are composed primarily of hydrocarbon chains.

Question 4

What type of bond forms between two amino acids during protein synthesis?

Accepted Answer

Peptide bond

Question 5

Which level of protein structure is defined by the sequence of amino acids?

Accepted Answer

Primary structure

Question 6

A mutation causes a change in the amino acid sequence of a protein. Which level of protein structure is directly affected?

Accepted Answer

Primary structure

Question 7

Which of the following is a storage polysaccharide found in animals?

Accepted Answer

Glycogen

Question 8

What is the main structural difference between an aldose and a ketose monosaccharide?

Accepted Answer

Aldoses have a carbonyl group at the end of the carbon chain, while ketoses have it in the middle.

Question 9

Which of the following is NOT a function of lipids in biological systems?

Accepted Answer

Catalyzing chemical reactions

Question 10

Which type of macromolecule is primarily responsible for storing and transmitting hereditary information?

Accepted Answer

Nucleic acids

Question 11

During hydrolysis of a polymer, which molecule is required to break the bond between monomers?

Accepted Answer

Water

Question 12

Which of the following best describes the structure of a nucleotide?

Accepted Answer

A phosphate group, a pentose sugar, and a nitrogenous base

Question 13

Which of the following is true about the synthesis of nucleic acids?

Accepted Answer

Nucleotides are added to the 3' end of the growing chain.

Question 14

Which of the following bonds stabilizes the secondary structure of proteins?

Accepted Answer

Hydrogen bonds between amino and carbonyl groups

Question 15

A protein loses its shape and function when exposed to high temperature. This process is called:

Accepted Answer

Denaturation

Question 16

Which of the following is a structural polysaccharide found in the cell walls of plants?

Accepted Answer

Cellulose

Question 17

Which of the following is a correct pairing of a nitrogenous base with its category?

Accepted Answer

Guanine – Purine

Question 18

Which of the following is true about phospholipids in cell membranes?

Accepted Answer

They have both hydrophobic and hydrophilic regions.

Question 19

Which of the following is a difference between DNA and RNA?

Accepted Answer

RNA contains ribose, while DNA contains deoxyribose.

Question 20

Which of the following interactions is NOT typically involved in stabilizing the tertiary structure of proteins?

Accepted Answer

Peptide bonds

Carbon and Molecular Diversity: Structure and Function of Macromolecules

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