Portage Learning Chem 103 module 1 Comprehensive questions and verified answers recently testing real exam 2025 100% accurate.

Portage Learning Chem 103 module 1 Comprehensive
questions and verified answers recently testing real
exam 2025 100% accurate

Portage Learning CHEM 210: Biochemistry - Module 1 Exam (2025/2026 Verified)Portage
Learning's CHEM 210 Module 1 Exam focuses on foundational concepts: biomolecules, organic
chemistry basics, carbon properties, functional groups, and eukaryotic cell components. 1 Exam
Questions & AnswersQuestion 1 (3 pts)

True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol (or
3,000 g/mol) is considered a macromolecule. Answer: False

Rationale: Macromolecules are large polymers with molecular masses typically >5,000 g/mol
(e.g., proteins, nucleic acids). Smaller compounds (like oligosaccharides) are not classified as
macromolecules. (Module 1.3: Biomolecules)




Question 2 (3 pts)

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

Rationale: Biomolecules often contain multiple functional groups (e.g., amino acids have both
amine and carboxyl groups). This diversity enables their reactivity and specificity. (Module 1.2:
Organic Chemistry Beginnings)




Question 3 (3 pts)

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

,Rationale: Peroxisomes break down fatty acids and detoxify peroxides (e.g., H₂O₂), not
macromolecules. Lysosomes are responsible for digesting macromolecules via hydrolytic
enzymes. (Module 1.4: Eukaryotic Cell Organelles)



Question 4 (3 pts)

True or False: The functional group -OH is an alcohol. Answer: True

Rationale: The hydroxyl group (-OH) attached to a carbon chain defines an alcohol (e.g.,
ethanol). Alcohols are polar and form H-bonds, crucial for biomolecule solubility. (Module 1.2:
Functional Groups)



Question 5 (3 pts)

Of the following, which is not a property of carbon?

A) Forming covalent bonds

B) Triple bond formation

C) Possessing five valence electrons

D) Reacting to form long chains called polymers

E) Forming multiple bonds Answer: C) Possessing five valence electrons

Rationale: Carbon has four valence electrons, allowing tetravalent bonding (single, double,
triple) and catenation (chain formation). Five electrons would make it behave like nitrogen.
(Module 1.1: Carbon Properties)



Question 6 (3 pts)

Which of the following is an element not typically found in living organisms?

A) C

B) H

C) O

D) N

, E) Ar Answer: E) Ar

Rationale: Living organisms are primarily composed of CHON (carbon, hydrogen, oxygen,
nitrogen ~96% of mass). Argon (Ar) is a noble gas, inert, and not biologically essential. (Module
1.1: Elements in Biology)




Question 7 (3 pts)

The study of non-carbon compounds is:

A) Organic chemistry

B) Inorganic chemistry

C) Biochemistry

D) Environmental chemistry

E) None of the above Answer: B) Inorganic chemistry

Rationale: Organic chemistry studies carbon-containing compounds (e.g., biomolecules).
Inorganic covers all others (e.g., metals, salts). Biochemistry bridges organic chemistry and
biology. (Module 1.2: Organic vs. Inorganic)




Question 8 (3 pts)

The following functional group is an example of _________.

(Image: Typically a C=O with two alkyl groups attached, e.g., >C=O) Answer: Ketone

Rationale: A ketone has a carbonyl (C=O) group where the carbon is bonded to two carbons (R
groups). Aldehydes have one R and one H. (Module 1.2: Functional Groups)