Question 1

Which of the following best describes a polymer?

Accepted Answer

A long molecule consisting of many similar or identical building blocks linked by covalent bonds

Question 2

Which reaction is responsible for joining two monosaccharides to form a disaccharide?

Accepted Answer

Dehydration reaction

Question 3

What is the main function of glycogen in animal cells?

Accepted Answer

Long-term energy storage

Question 4

Which of the following is NOT a function of proteins?

Accepted Answer

Storing genetic information

Question 5

Which of the following statements about phospholipids is correct?

Accepted Answer

They have hydrophobic tails and a hydrophilic head

Question 6

What type of bond links amino acids together in a protein?

Accepted Answer

Peptide bond

Question 7

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

Accepted Answer

Primary structure

Question 8

What happens to a protein when it is denatured?

Accepted Answer

It loses its native three-dimensional structure

Question 9

Which of the following is a structural polysaccharide found in the exoskeleton of arthropods?

Accepted Answer

Chitin

Question 10

Which molecule is the most common monosaccharide and has the formula $$C_6H_{12}O_6$?

Accepted Answer

Glucose

Question 11

What is the main difference between DNA and RNA?

Accepted Answer

DNA is usually double-stranded, while RNA is usually single-stranded

Question 12

Which of the following best explains why fats are hydrophobic?

Accepted Answer

They contain many nonpolar C-H bonds

Question 13

A dehydration reaction is required for which of the following processes?

Accepted Answer

Linking nucleotides to form a nucleic acid

Question 14

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

Accepted Answer

It is a component of cell membranes and a precursor for steroid synthesis

Question 15

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

Accepted Answer

The folding or coiling of the polypeptide chain into alpha helices and beta sheets due to hydrogen bonding

Question 16

Which of the following statements about polysaccharides is correct?

Accepted Answer

They can serve both storage and structural roles

Question 17

Which of the following is true about the phospholipid bilayer in cells?

Accepted Answer

It forms a boundary between the cell and its external environment

Question 18

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

Accepted Answer

Nucleic acid and nucleotide

Question 19

What is the main structural difference between starch and cellulose?

Accepted Answer

Starch is made of $$\alpha$$ glucose monomers, while cellulose is made of $$\beta$$ glucose monomers

Question 20

Which of the following best explains why enzymes are considered catalysts?

Accepted Answer

They speed up chemical reactions without being consumed

The Structure and Function of Large Biological Molecules (Chapter 5 Study Notes)

Study Guide - Practice Questions