Question 1

According to Canada's Dietary Guidelines, which of the following is recommended for healthy eating habits?

Accepted Answer

Choose protein from plants more often.

Question 2

Which type of chemical bond is formed when two amino acids are joined together during protein synthesis?

Accepted Answer

Peptide bond

Question 3

During the formation of a peptide bond, which molecule is removed from the reactants?

Accepted Answer

Water ($H_2O$)

Question 4

Which level of protein structure is primarily stabilized by interactions between R groups?

Accepted Answer

Tertiary structure

Question 5

A patient is unable to digest proteins efficiently due to a lack of a certain enzyme. What is the most likely consequence at the molecular level?

Accepted Answer

Peptide bonds will not be broken down effectively.

Question 6

Which of the following best describes the function of enzymes in metabolic reactions?

Accepted Answer

They speed up reactions by lowering activation energy.

Question 7

Which of the following is a correct representation of a bidirectional metabolic reaction?

Accepted Answer

$A + B \leftrightarrow C + D$

Question 8

Which component is NOT part of a nucleotide structure?

Accepted Answer

Fatty acid tail

Question 9

DNA and RNA differ in their structure. Which statement is correct?

Accepted Answer

DNA is a double helix, RNA is a single helix.

Question 10

Which of the following is an example of a catabolic reaction?

Accepted Answer

Breakdown of glucose to release energy

Question 11

A person chooses to eat meals with others and is mindful of their eating habits. According to Canada's Dietary Guidelines, what is the likely benefit?

Accepted Answer

Improved self-control and healthier food choices

Question 12

Which of the following best describes the role of nucleic acids in the cell?

Accepted Answer

They store and express genetic information.

Question 13

Which of the following is a correct description of the building analogy for DNA and RNA?

Accepted Answer

DNA is like the architect's plan, RNA is like the tradesperson's individual plan.

Question 14

Which of the following is a purine found in nucleic acids?

Accepted Answer

Adenine

Question 15

If a metabolic reaction is represented as $A + B \rightarrow C + D$, what type of reaction is this?

Accepted Answer

Forward reaction

Question 16

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

Accepted Answer

Storing genetic information

Question 17

Which of the following best explains why modifications are needed after a protein is synthesized?

Accepted Answer

Modifications help the protein achieve its correct structure and function.

Question 18

Which of the following is a correct formula for the hydrolysis of a peptide bond?

Accepted Answer

$Peptide + H_2O \rightarrow Amino\ acids$

Question 19

Which of the following statements about metabolic reactions is correct?

Accepted Answer

Anabolic reactions use energy to build complex molecules.

Question 20

A mutation causes a change in the nitrogen-containing ring of a nucleotide in DNA. Which of the following is the most likely consequence?

Accepted Answer

The genetic code may be altered, potentially affecting protein synthesis.

Macromolecules and Metabolic Reactions in Human Physiology

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