WGU C190 FINAL EXAM
COMPREHENSIVE REVIEW QUESTIONS
AND ANSWERS
1. Which property of water is primarily responsible for the ability of insects to walk on its
surface?
A. Surface tension due to hydrogen bonding
B. High specific heat
C. Adhesion to non-polar surfaces
D. Density anomalies at low temperatures
Answer: A
Conceptual Explanation: Surface tension is caused by the cohesive forces between water
molecules at the surface, which are linked by hydrogen bonds.
2. In a cell, which organelle is responsible for the detoxification of metabolic waste products
and synthesis of lipids?
A. Smooth Endoplasmic Reticulum
,B. Golgi Apparatus
C. Rough Endoplasmic Reticulum
D. Lysosomes
Answer: A
Conceptual Explanation: The Smooth ER is the primary site for lipid synthesis and the
detoxification of drugs and poisons.
3. What is the primary function of the enzyme DNA Polymerase III during DNA replication?
A. Unwinding the double helix
B. Synthesizing an RNA primer
C. Sealing gaps between Okazaki fragments
D. Adding nucleotides to the growing DNA strand
Answer: D
Conceptual Explanation: DNA Polymerase III adds nucleotides to the 3’ end of the
growing DNA strand during elongation.
4. Which process results in the formation of two genetically identical daughter cells?
A. Meiosis I
B. Mitosis
C. Meiosis II
, D. Binary fission in eukaryotes
Answer: B
Conceptual Explanation: Mitosis is the division of the nucleus that results in two daughter
cells with identical genetic material.
5. Which molecule serves as the final electron acceptor in the mitochondrial electron
transport chain?
A. Oxygen
B. Water
C. NAD+
D. Carbon dioxide
Answer: A
Conceptual Explanation: Oxygen acts as the final electron acceptor, combining with
electrons and protons to form water.
6. What occurs during the process of transcription?
A. mRNA is used as a template to make a protein
B. DNA is used as a template to make mRNA
C. DNA is used as a template to make more DNA
D. Proteins are folded into their tertiary structures
COMPREHENSIVE REVIEW QUESTIONS
AND ANSWERS
1. Which property of water is primarily responsible for the ability of insects to walk on its
surface?
A. Surface tension due to hydrogen bonding
B. High specific heat
C. Adhesion to non-polar surfaces
D. Density anomalies at low temperatures
Answer: A
Conceptual Explanation: Surface tension is caused by the cohesive forces between water
molecules at the surface, which are linked by hydrogen bonds.
2. In a cell, which organelle is responsible for the detoxification of metabolic waste products
and synthesis of lipids?
A. Smooth Endoplasmic Reticulum
,B. Golgi Apparatus
C. Rough Endoplasmic Reticulum
D. Lysosomes
Answer: A
Conceptual Explanation: The Smooth ER is the primary site for lipid synthesis and the
detoxification of drugs and poisons.
3. What is the primary function of the enzyme DNA Polymerase III during DNA replication?
A. Unwinding the double helix
B. Synthesizing an RNA primer
C. Sealing gaps between Okazaki fragments
D. Adding nucleotides to the growing DNA strand
Answer: D
Conceptual Explanation: DNA Polymerase III adds nucleotides to the 3’ end of the
growing DNA strand during elongation.
4. Which process results in the formation of two genetically identical daughter cells?
A. Meiosis I
B. Mitosis
C. Meiosis II
, D. Binary fission in eukaryotes
Answer: B
Conceptual Explanation: Mitosis is the division of the nucleus that results in two daughter
cells with identical genetic material.
5. Which molecule serves as the final electron acceptor in the mitochondrial electron
transport chain?
A. Oxygen
B. Water
C. NAD+
D. Carbon dioxide
Answer: A
Conceptual Explanation: Oxygen acts as the final electron acceptor, combining with
electrons and protons to form water.
6. What occurs during the process of transcription?
A. mRNA is used as a template to make a protein
B. DNA is used as a template to make mRNA
C. DNA is used as a template to make more DNA
D. Proteins are folded into their tertiary structures
