CHEM 210 Module 1: Introduction to Biochemistry Portage Learning Exam Review Complete Question Bank with Answers and Rationales

CHEM 210 Module 1: Introduction to Biochemistry
Portage Learning Exam Review Complete Question
Bank with Answers and Rationales



CHEM 210 Module 1: Introduction to Biochemistry

Portage Learning Exam Review

Complete Question Bank with Answers and Rationales




PART I: TRUE/FALSE QUESTIONS




Question 1
True or False: According to the Module, a compound with a molecular mass of
1,000 g/mol is considered a macromolecule.

• □

A. True
• ☑

B. False

Correct Answer: False

Expert Rationale: Macromolecules are typically defined as compounds with a molecular
mass greater than 5,000 g/mol . A compound with a mass of 1,000 g/mol does not meet

,this threshold. While the exact cutoff can vary depending on the source,
macromolecules are generally large polymers with high molecular weights in the
thousands to millions of daltons. Examples of macromolecules include proteins, nucleic
acids, and polysaccharides .




Question 2
True or False: Biomolecules can have only two functional groups.

• □

A. True
• ☑

B. False

Correct Answer: False

Expert Rationale: Biomolecules can contain multiple functional groups . The complexity
and diversity of biological molecules arise from the combination of multiple functional
groups, each contributing to the molecule's overall chemical properties and reactivity.
The module discusses various functional groups including alcohols, amines, ketones,
amides, thiols, and aldehydes .




Question 3
True or False: The following functional group (OH) is an alcohol.

• ☑

A. True
• □

B. False

Correct Answer: True

, Expert Rationale: Alcohols are characterized by the presence of a hydroxyl (-OH) group
attached to a carbon atom . This is one of the most common functional groups found in
biochemistry, particularly in carbohydrates.




Question 4
True or False: In a eukaryotic cell, the organelles called peroxisomes serve the
purpose of digesting macromolecules.

• □

A. True
• ☑

B. False

Correct Answer: False

Expert Rationale: Peroxisomes are organelles that contain enzymes for oxidation
reactions, breaking down fatty acids and detoxifying harmful substances like hydrogen
peroxide . The digestion of macromolecules is primarily the function of lysosomes, which
contain hydrolytic enzymes. This is a common misconception that the exam tests.




Question 5
True or False: Carbon dioxide has a linear molecular shape AND has a bond angle
of 109.5 degrees.

• □

A. True
• ☑

B. False

Correct Answer: False