POST UTME CHRISTOPHER UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2.5 L solution of 0.5 M NaCl is diluted to 5 L. What is the new concentration of NaCl?
A. 0.1 M
B. 0.2 M
C. 0.25 M
D. 0.5 M
Question 2
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 3
A plant has a photosynthetic rate of 10 mg CO2/h. If the plant is exposed to light for 8 hours, how much CO2 will it absorb?
A. 80 mg
B. 100 mg
C. 120 mg
D. 140 mg
Question 4
What is the primary function of the hypothalamus in the regulation of body temperature?
A. To produce heat through shivering
B. To dissipate heat through sweating
C. To regulate body temperature through the hypothalamus
D. To produce cold through vasoconstriction
Question 5
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 6
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 7
Which of the following is a type of tissue found in the human body?
A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue
Question 8
A plant with the genotype RrSs is crossed with a plant with the genotype RrSs. What is the probability that the offspring will have the genotype RRSS?
A. 1/4
B. 1/2
C. 3/4
D. 1
Question 9
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 10
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 11
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if five conditions are met. Which of the following is NOT one of these conditions?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 12
The diagram below represents a cross-section of the human eye. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 13
What is the process by which plants convert light energy into chemical energy?
A. Respiration
B. Photosynthesis
C. Transpiration
D. Osmosis
Question 14
In cell division, what is the function of the centrioles?
A. To form the spindle fibers
B. To form the nuclear envelope
C. To form the mitotic spindle
D. To form the cytokinetic furrow
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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