Question 1

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

Accepted Answer

Eat a variety of vegetables and fruits, whole grain foods, and protein foods, with an emphasis on plant-based proteins.

Question 2

Which of the following best describes the process of forming a peptide bond during protein synthesis?

Accepted Answer

A water molecule is removed to link two amino acids together.

Question 3

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

Accepted Answer

Tertiary structure

Question 4

A patient is unable to digest proteins efficiently due to a lack of a certain type of molecule. Which molecule is most likely deficient?

Accepted Answer

Enzymes

Question 5

Which of the following best represents the general formula for a metabolic reaction?

Accepted Answer

$$A + B \rightarrow C + D$$

Question 6

Which statement about DNA and RNA is correct?

Accepted Answer

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

Question 7

A mutation affects the sequence of amino acids in a protein but does not alter the folding of the protein. Which level of protein structure is directly affected?

Accepted Answer

Primary structure

Question 8

Which of the following is NOT a component of a nucleotide?

Accepted Answer

A fatty acid chain

Question 9

Which of the following best describes an anabolic reaction?

Accepted Answer

A reaction that builds larger molecules from smaller ones, usually requiring energy.

Question 10

In the context of metabolic reactions, what does it mean for a reaction to be bidirectional?

Accepted Answer

The reaction can proceed in both the forward and reverse directions: $$A + B \leftrightarrow C + D$$

Question 11

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

Accepted Answer

Acting as chemical messengers, structural components, and enzymes.

Question 12

A person is following the chip bag example and struggles with self-control. According to the dietary guidelines, which strategy would best help them make healthier choices?

Accepted Answer

Being mindful of their eating habits and sharing meals with others.

Question 13

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

Accepted Answer

They lower the activation energy required for reactions to occur.

Question 14

Which of the following correctly matches a nucleotide component with its function?

Accepted Answer

Nitrogen-containing base: encodes genetic information

Question 15

A scientist is analyzing a protein and finds it consists of multiple polypeptide chains. Which level of protein structure is being observed?

Accepted Answer

Quaternary structure

Question 16

Which of the following best explains why water is important in the formation and breakdown of biological macromolecules?

Accepted Answer

Water is removed during dehydration synthesis to form bonds and added during hydrolysis to break bonds.

Question 17

Which of the following is a correct pairing of a nucleic acid with its function?

Accepted Answer

DNA: stores genetic information

Question 18

A metabolic pathway involves the conversion of substrate $$A to $$product $$D$$ through several steps: $$A \rightarrow B \rightarrow C \rightarrow D. If $$enzyme 2 (which catalyzes $$B \rightarrow C) is $$inhibited, what will happen?

Accepted Answer

Substrate $$B$$ will accumulate, and less $$C$$ and $$D$$ will be produced.

Question 19

Which of the following best describes the difference between purines and pyrimidines in nucleic acids?

Accepted Answer

Purines have a double-ring structure, while pyrimidines have a single-ring structure.

Question 20

A person consumes a diet high in highly processed foods and sugary drinks. According to Canada's Dietary Guidelines, which health risk is most likely to increase?

Accepted Answer

Risk of chronic diseases such as obesity and type 2 diabetes

Macromolecules and Metabolic Reactions in Anatomy & Physiology

Study Guide - Practice Questions

Study Guide - Flashcards