POST UTME IMS U 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of digestion in the human body involves the breakdown of food into smaller molecules. Which of the following enzymes is responsible for breaking down proteins?
A. Amylase
B. Lipase
C. Tryp\sin
D. Lactase
Question 2
A species of plant has a growth rate of 20% per year. If the initial population is 1000 plants, what will be the population after 5 years?
A. 10000
B. 2000
C. 4000
D. 5000
Question 3
The diagram below shows the structure of a DNA molecule. What is the term for the sequence of nucleotides that makes up a gene?
A. Gene expression
B. Gene mutation
C. Gene regulation
D. Gene sequence
Question 4
A diagram of the human circulatory system is shown below. Which of the following structures is responsible for pumping blood from the heart to the lungs?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Pulmonary valve
Question 5
A researcher is studying the effects of pollution on a freshwater e\cosystem. Which of the following is a likely consequence of increased pollution?
A. Increased biodiversity due to the introduction of new species
B. Decreased primary production due to reduced light availability
C. Changes in community composition due to the loss of sensitive species
D. No significant impact on the e\cosystem
Question 6
A genetic cross is performed between two pea plants, one with the genotype TT and the other with the genotype tt. What is the probability that the offspring will have the genotype Tt?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 7
A 35-year-old female patient undergoes a laparoscopic cholecystectomy. During the procedure, the surgeon notices that the patient's gallbladder is filled with a thick, greenish-yellow fluid. Which of the following tissues is most likely responsible for the production of this fluid?
A. Bile duct epithelium
B. Gallbladder mu\cosa
C. Pancreatic tissue
D. Liver parenchyma
Question 8
In the context of tissue classification, what is the primary function of the epithelial tissue?
A. To provide structural support to the body
B. To facilitate the exchange of nutrients and waste products
C. To produce hormones and enzymes
D. To provide protection to the body
Question 9
The theory of evolution by natural selection was first proposed by Charles Darwin in his book 'On the Origin of Species'. Which of the following is a key component of this theory?
A. Survival of the fittest
B. Mutation
C. Gene flow
D. Genetic drift
Question 10
The diagram below shows the structure of a mitochondrion. What is the function of the cristae?
A. Protein synthesis
B. Energy production
C. Cell signaling
D. Cell division
Question 11
In the context of evolutionary theories, what is the primary mechanism driving the process of speciation in allopatric populations?
A. Genetic drift
B. Gene flow
C. Natural selection
D. Mutation
Question 12
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 13
A diagram of a human eye is shown below. If the eye is placed in a solution with a pH of 6.5, what is the expected effect on the cornea?
A. The cornea will become more permeable.
B. The cornea will become less permeable.
C. The cornea will remain unchanged.
D. The cornea will rupture.
Question 14
The process of photosynthesis occurs in the chloroplasts of plant cells and involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Water
D. Glu\cose
Question 15
The xylem is a type of vascular tissue in plants that is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells
B. It is responsible for transporting sugars from the leaves to the roots
C. It is composed of living cells
D. It is responsible for transporting water and minerals from the roots to the leaves

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