Question 1

Which of the following best describes the relationship between monomers and polymers in biological macromolecules?

Accepted Answer

Monomers are individual building blocks that are covalently linked to form polymers.

Question 2

Which chemical reaction is responsible for linking monosaccharides together to form polysaccharides, and what type of bond is formed?

Accepted Answer

Dehydration synthesis; glycosidic bond

Question 3

A student is analyzing a molecule with the formula $$C_6H_{12}O_6$. Which class of biomolecule does this formula most likely represent?

Accepted Answer

Carbohydrate

Question 4

Which of the following statements about the structure of DNA is correct?

Accepted Answer

The nucleic acid strands in a DNA molecule are oriented antiparallel to each other.

Question 5

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids contain only carbon-carbon single bonds, while unsaturated fatty acids contain at least one carbon-carbon double bond.

Question 6

Which of the following is a function of polysaccharides in animals?

Accepted Answer

Energy storage in the form of glycogen

Question 7

Which two functional groups are always found in amino acids?

Accepted Answer

Carboxyl and amino groups

Question 8

A protein loses its functional shape after being exposed to high heat. What is this process called, and what is a possible cellular response?

Accepted Answer

Denaturation; chaperone proteins may assist in refolding

Question 9

Which of the following best describes a nucleotide?

Accepted Answer

A nitrogenous base, a phosphate group, and a sugar

Question 10

Which of the following is true regarding phospholipids in biological membranes?

Accepted Answer

The polar heads interact with water; the nonpolar tails do not.

Question 11

Which of the following chemical reactions results in energy release when glycosidic bonds are broken?

Accepted Answer

Hydrolysis reaction

Question 12

Which of the following best describes the primary structure of a protein?

Accepted Answer

The specific amino acid sequence in a protein

Question 13

Which polysaccharide is an important component in the structure of lobsters and insects?

Accepted Answer

Chitin

Question 14

Which of the following statements about the difference between DNA and RNA is correct?

Accepted Answer

The sugar group in DNA has one less hydroxyl group than the sugar group in RNA.

Question 15

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

Accepted Answer

A lipid made of four fused carbon rings

Question 16

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

Accepted Answer

Carbohydrate – monosaccharide

Question 17

Which of the following best explains why lipids are not considered true polymers?

Accepted Answer

Lipids are not composed of repeating monomer units.

Question 18

Which of the following is a function of biological waxes?

Accepted Answer

Protection and prevention of water loss

Question 19

Which of the following best describes the role of chaperone proteins?

Accepted Answer

Assist in protein folding or re-naturing

Question 20

Which of the following is the correct sequence of events in the formation of a triglyceride?

Accepted Answer

Three fatty acids are linked to a glycerol molecule via dehydration synthesis

The Structure and Function of Large Biological Molecules

Guida di studio - Domande di pratica