POST UTME BELLS UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of photosynthesis, what is the role of the enzyme RuBisCO in the Calvin cycle?
A. It catalyzes the conversion of CO2 to glu\cose
B. It is involved in the light-dep\endent reactions
C. It is a key enzyme in the breakdown of starch to glu\cose
D. It is responsible for the fixation of nitrogen
Question 2
A plant hormone that promotes cell elongation is?
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 3
A diagram of the human nervous system shows the following components: a brain, a spinal cord, and a peripheral nervous system. Which of the following is NOT a function of the peripheral nervous system?
A. Sensory input
B. Motor output
C. Regulation of body temperature
D. Regulation of blood pressure
Question 4
What is the primary function of the Golgi apparatus in a cell?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis
D. Modification and packaging of proteins and lipids
Question 5
What is the term for the process by which a microorganism becomes resis\tant to an antibiotic?
A. Bacterial conjugation
B. Transformation
C. Transduction
D. Antibiotic resis\tance
Question 6
A study on the effect of pH on enzyme activity found that the enzyme's activity increased as the pH increased. Which of the following best describes the type of enzyme?
A. Acidic enzyme
B. Basic enzyme
C. Neutral enzyme
D. Optimal pH enzyme
Question 7
A genetic cross between two organisms resulted in a 9:3:3:1 ratio of phenotypes. What is the genotype of the parents?
A. Both parents are homozygous dominant
B. One parent is homozygous dominant and the other is homozygous recessive
C. Both parents are heterozygous
D. One parent is homozygous dominant and the other is heterozygous
Question 8
In the process of osmoregulation, what is the primary mechanism by which the kidney regulates the concentration of ions in the blood?
A. Hormonal regulation
B. Renal tubular reabsorption
C. Glomerular filtration
D. Aldosterone-mediated sodium reabsorption
Question 9
What is the term for the process by which a cell divides into two daughter cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Endoreduplication
Question 10
What is the primary function of the hypothalamus in the regulation of body temperature?
A. Regulation of hunger and thirst
B. Regulation of body temperature
C. Regulation of blood pressure
D. Regulation of sleep and wakefulness

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