POST UTME CHRISTOPHER UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of osmoregulation, what is the primary mechanism by which the kidneys regulate the concentration of ions in the blood?
A. Active transport of ions
B. Passive diffusion of ions
C. Filtration of ions
D. Excretion of ions
Question 2
A diagram of the human reproductive system is shown below. What is the function of the vas deferens?
A. To store sperm
B. To transport sperm
C. To produce sperm
D. To regulate hormone production
Question 3
The diagram below represents a cell undergoing mitosis. Which stage of mitosis is represented by this diagram?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 4
The hormone that stimulates the release of insulin from the pancreas is
A. Glucagon
B. Insulin
C. Ghrelin
D. Glucagon-like peptide-1
Question 5
The process by which plants release water vapor into the air is known as
A. Respiration
B. Photosynthesis
C. Transpiration
D. Evaporation
Question 6
What is the process by which plants convert light energy into chemical energy?
A. Respiration
B. Photosynthesis
C. Transpiration
D. Osmosis
Question 7
In the classification of living things, which of the following is a characteristic of Archaea?
A. Cell wall is absent
B. Cell wall is present
C. Chlorophyll is present
D. Peptidoglycan is present
Question 8
In a diploid cell, what is the probability that a randomly selected gamete will have the genotype AA?
A. 1/4
B. 1/2
C. 3/4
D. 1
Question 9
A 50 g sample of glu\cose is burned in a calorimeter. If the temperature rises by 10°C, what is the heat of combustion of glu\cose?
A. 3000 J/g
B. 4000 J/g
C. 5000 J/g
D. 6000 J/g
Question 10
A diagram of the human respiratory system is shown below. What is the function of the alveoli?
A. To exchange oxygen and carbon dioxide
B. To filter the air we breathe
C. To produce mucus
D. To regulate body temperature
Question 11
In the water cycle, what is the process by which water is transferred from the land to the atmosphere?
A. Evaporation
B. Condensation
C. Runoff
D. Infiltration
Question 12
A cell undergoes mitosis to produce two daughter cells. If the original cell has a diploid number of 46 chromosomes, how many chromosomes will each daughter cell have?
A. 46
B. 92
C. 46
D. 23
Question 13
A neuron releases the neurotransmitter dopamine into the synapse. What is the primary function of dopamine in the nervous system?
A. To transmit signals from the d\endrite to the cell body
B. To transmit signals from the cell body to the axon
C. To transmit signals from the axon to the d\endrite
D. To regulate the strength of synaptic connections
Question 14
A diagram of the cell cycle is shown below. What is the function of the G1 phase?
A. To prepare the cell for DNA replication
B. To replicate the DNA
C. To prepare the cell for cell division
D. To repair damaged DNA
Question 15
In the context of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP through substrate-level phosphorylation
B. To produce NADH and FADH2
C. To pump protons across the mitochondrial membrane
D. To reduce oxygen to water

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