Practice Post UTME EKSU biology 2025 Past Questions

Question 1

A 2.5 L solution contains 0.5 M glu\cose and 0.2 M fructose. What is the total molarity of the solution?

A. 0.7 M

B. 0.8 M

C. 0.9 M

D. 1.0 M

Question 2

A diagram of a microscope is shown below. Identify the part of the microscope responsible for focu\sing the image.

A. Eyepiece

B. Stage

C. Objective lens

D. Condenser lens

Question 3

A diagram of the human eye is shown below. Identify the part labeled 'A'?

A. Cornea

B. Iris

C. Retina

D. Lens

Question 4

In a typical human cell, the mitochondria is responsible for producing energy in the form of ATP through the process of cellular respiration. Which of the following statements is FALSE regarding the electron transport chain?

A. The electron transport chain is the site of oxidative phosphorylation.

B. The electron transport chain is the site of substrate-level phosphorylation.

C. The electron transport chain is the site of ATP synthase.

D. The electron transport chain is the site of NADH and FADH2 production.

Question 5

A diagram of the human respiratory system is shown below. Which part of the diagram is responsible for the exchange of oxygen and carbon dioxide?

A. A

B. B

C. C

D. D

Question 6

A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?

A. Storage of nutrients

B. Production of energy

C. Regulation of cell growth

D. Transport of molecules

Question 7

A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.

A. Mitochondria

B. Chloroplast

C. Nucleus

D. Vacuole

Question 8

The diagram below shows the structure of a plant cell. Which of the following is a function of the vacuole?

A. Storage of water

B. Regulation of pH

C. Maintenance of cell shape

D. Production of ATP

Question 9

In a population of 1000 individuals, 70% are heterozygous for the ABO blood group, 20% are homozygous dominant, and 10% are homozygous recessive. What is the genotype and phenotype of the individual represented by the Punnett square below?

A. Genotype: AA, Phenotype: Type A blood

B. Genotype: AO, Phenotype: Type A blood

C. Genotype: oo, Phenotype: Type O blood

D. Genotype: AO, Phenotype: Type O blood

Question 10

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. Large population size

C. No mutation

D. No gene flow

Question 11

A bio\logist is studying the structure of a plant cell. Which of the following organelles is responsible for storing genetic information?

A. Mitochondria

B. Chloroplast

C. Nucleus

D. Vacuole

Question 12

A diagram of the human nervous system is shown below. Which of the following is a function of the cerebellum?

A. Regulation of body temperature

B. Control of voluntary movements

C. Regulation of heart rate

D. Maintenance of posture

Question 13

In the context of osmoregulation, what is the primary function of the kidneys in maintaining electrolyte balance?

A. Excreting excess water

B. Regulating pH levels

C. Maintaining electrolyte balance

D. Producing hormones

Question 14

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. Large population size

C. No mutation

D. No gene flow

Question 15

A diagram of the human brain is shown below. What is the function of the part labeled 'B'?

A. To control movement

B. To regulate body temperature

C. To process sensory information

D. To produce hormones

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