WGU C190 INTRODUCTION TO
BIOLOGY ADVANCED PRACTICE
EXAM QUESTIONS AND ANSWERS
1. Which process results in the production of two genetically identical daughter cells?
A. Meiosis I
B. Meiosis II
C. Mitosis
D. Binary Fission in eukaryotes
Answer: C
Conceptual Explanation: Mitosis is the process of cell division that results in two
daughter cells each having the same number and kind of chromosomes as the parent
nucleus.
2. In a DNA molecule, which nitrogenous base pairs with Guanine?
A. Adenine
B. Thymine
C. Uracil
,D. Cytosine
Answer: D
Conceptual Explanation: According to Chargaff’s rules, Guanine always pairs with
Cytosine via three hydrogen bonds in a DNA molecule.
3. What is the primary function of the rough endoplasmic reticulum?
A. Lipid synthesis
B. Protein synthesis and modification
C. ATP production
D. Waste detoxification
Answer: B
Conceptual Explanation: The rough endoplasmic reticulum is studded with ribosomes
and is responsible for the synthesis and folding of proteins.
4. Which of the following describes an organism’s physical appearance or visible traits?
A. Phenotype
B. Genotype
C. Allele
D. Haplotype
Answer: A
, Conceptual Explanation: The phenotype is the set of observable characteristics of an
individual resulting from the interaction of its genotype with the environment.
5. According to the second law of thermodynamics, what happens during every energy
transfer?
A. Some energy is lost as heat
B. Entropy decreases
C. Energy is created
D. Total energy decreases
Answer: A
Conceptual Explanation: The second law of thermodynamics states that every energy
transfer increases the entropy of the universe, usually by releasing energy as heat.
6. What is the main role of enzymes in biological reactions?
A. Lowering the activation energy
B. Increasing the activation energy
C. Changing the equilibrium constant
D. Providing thermal energy
Answer: A
Conceptual Explanation: Enzymes act as catalysts by lowering the activation energy
required for a chemical reaction to occur, thus speeding up the rate.
BIOLOGY ADVANCED PRACTICE
EXAM QUESTIONS AND ANSWERS
1. Which process results in the production of two genetically identical daughter cells?
A. Meiosis I
B. Meiosis II
C. Mitosis
D. Binary Fission in eukaryotes
Answer: C
Conceptual Explanation: Mitosis is the process of cell division that results in two
daughter cells each having the same number and kind of chromosomes as the parent
nucleus.
2. In a DNA molecule, which nitrogenous base pairs with Guanine?
A. Adenine
B. Thymine
C. Uracil
,D. Cytosine
Answer: D
Conceptual Explanation: According to Chargaff’s rules, Guanine always pairs with
Cytosine via three hydrogen bonds in a DNA molecule.
3. What is the primary function of the rough endoplasmic reticulum?
A. Lipid synthesis
B. Protein synthesis and modification
C. ATP production
D. Waste detoxification
Answer: B
Conceptual Explanation: The rough endoplasmic reticulum is studded with ribosomes
and is responsible for the synthesis and folding of proteins.
4. Which of the following describes an organism’s physical appearance or visible traits?
A. Phenotype
B. Genotype
C. Allele
D. Haplotype
Answer: A
, Conceptual Explanation: The phenotype is the set of observable characteristics of an
individual resulting from the interaction of its genotype with the environment.
5. According to the second law of thermodynamics, what happens during every energy
transfer?
A. Some energy is lost as heat
B. Entropy decreases
C. Energy is created
D. Total energy decreases
Answer: A
Conceptual Explanation: The second law of thermodynamics states that every energy
transfer increases the entropy of the universe, usually by releasing energy as heat.
6. What is the main role of enzymes in biological reactions?
A. Lowering the activation energy
B. Increasing the activation energy
C. Changing the equilibrium constant
D. Providing thermal energy
Answer: A
Conceptual Explanation: Enzymes act as catalysts by lowering the activation energy
required for a chemical reaction to occur, thus speeding up the rate.
