CHEM 210 BIOCHEMISTRY MODULE 5 EXAM
Actual Questions and Answers
Expert-Verified Explanation
This Exam contains:
✪ Multiple-choice and True/False Format
✪ Expert-Verified Explanations
✪ Verified with Trusted Textbooks
1. What are three ways that biochemists study biological organisms?
A. Studying only organelles
B. Measuring blood pressure and respiration
C. Relationship between structure/function, metabolism, communication
D. Analyzing genetic variation only
Answer: C
EXPLANATION: Biochemists focus on the relationship between biomolecule structure and
function, chemical reactions (metabolism), and communication at cellular and organism levels.
2. What is biochemistry?
A. The study of numbers in nature
B. The chemistry of inorganics
C. The chemistry of life
D. The study of matter
Answer: C
EXPLANATION: Biochemistry is the branch of science that explores the chemical processes
within and related to living organisms.
3. What is the molecular geometry of a linear molecule?
A. 107.5°
B. 104.5°
C. 109.5°
D. 180°
Answer: D
EXPLANATION: Linear molecules have a bond angle of 180°, with atoms aligned in a straight
line.
, 4. How many naturally occurring elements are found in living organisms?
A. More than 90
B. About 60
C. About 45
D. Fewer than 30
Answer: D
EXPLANATION: Less than 30 of the 90 naturally occurring elements are found in biological
organisms, mainly nonmetals from the upper right of the periodic table.
5. Why are smaller elements favored in biological systems?
A. They are easier to digest
B. They are metallic
C. They form stable covalent bonds
D. They form ionic bonds
Answer: C
EXPLANATION: Smaller atoms can approach one another closely and form stable covalent
bonds due to better orbital overlap.
6. What element is most critical to all living organisms?
A. Oxygen
B. Hydrogen
C. Carbon
D. Nitrogen
Answer: C
EXPLANATION: Carbon is essential due to its unique ability to form four covalent bonds,
enabling complex molecules necessary for life.
7. What is the difference between organic and inorganic chemistry?
A. Organic includes metals
B. Inorganic focuses on hydrocarbons
C. Organic involves carbon compounds
D. No difference
Answer: C
EXPLANATION: Organic chemistry studies carbon-based compounds, while inorganic chemistry
involves compounds not based on carbon structures.
Actual Questions and Answers
Expert-Verified Explanation
This Exam contains:
✪ Multiple-choice and True/False Format
✪ Expert-Verified Explanations
✪ Verified with Trusted Textbooks
1. What are three ways that biochemists study biological organisms?
A. Studying only organelles
B. Measuring blood pressure and respiration
C. Relationship between structure/function, metabolism, communication
D. Analyzing genetic variation only
Answer: C
EXPLANATION: Biochemists focus on the relationship between biomolecule structure and
function, chemical reactions (metabolism), and communication at cellular and organism levels.
2. What is biochemistry?
A. The study of numbers in nature
B. The chemistry of inorganics
C. The chemistry of life
D. The study of matter
Answer: C
EXPLANATION: Biochemistry is the branch of science that explores the chemical processes
within and related to living organisms.
3. What is the molecular geometry of a linear molecule?
A. 107.5°
B. 104.5°
C. 109.5°
D. 180°
Answer: D
EXPLANATION: Linear molecules have a bond angle of 180°, with atoms aligned in a straight
line.
, 4. How many naturally occurring elements are found in living organisms?
A. More than 90
B. About 60
C. About 45
D. Fewer than 30
Answer: D
EXPLANATION: Less than 30 of the 90 naturally occurring elements are found in biological
organisms, mainly nonmetals from the upper right of the periodic table.
5. Why are smaller elements favored in biological systems?
A. They are easier to digest
B. They are metallic
C. They form stable covalent bonds
D. They form ionic bonds
Answer: C
EXPLANATION: Smaller atoms can approach one another closely and form stable covalent
bonds due to better orbital overlap.
6. What element is most critical to all living organisms?
A. Oxygen
B. Hydrogen
C. Carbon
D. Nitrogen
Answer: C
EXPLANATION: Carbon is essential due to its unique ability to form four covalent bonds,
enabling complex molecules necessary for life.
7. What is the difference between organic and inorganic chemistry?
A. Organic includes metals
B. Inorganic focuses on hydrocarbons
C. Organic involves carbon compounds
D. No difference
Answer: C
EXPLANATION: Organic chemistry studies carbon-based compounds, while inorganic chemistry
involves compounds not based on carbon structures.
