POST UTME PAN-ATLANTIC UNIVERSITY 2018 Biology | Objective

Are you preparing for POST UTME PAN-ATLANTIC UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2018 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the context of excretion and osmoregulation, what is the primary function of the kidneys in regulating blood pressure?
A. To filter waste products from the blood
B. To regulate the amount of water in the body
Correct C. To maintain blood pressure through the renin-angioten\sin-aldosterone system
D. To produce hormones that stimulate thirst

Correct Answer: C

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Question 2
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 3
In the context of growth and regulation, what is the primary function of the hypothalamus in regulating body temperature?
A. To produce hormones that stimulate sweating
B. To regulate the amount of water in the body
Correct C. To maintain body temperature through the hypothalamic-pituitary-adrenal axis
D. To produce hormones that stimulate hunger

Correct Answer: C

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Question 4
A diagram of the human circulatory system is shown below. Which part of the system is responsible for transporting oxygenated blood from the lungs to the heart?
Correct A. Pulmonary arteries
B. Pulmonary veins
C. Aorta
D. Superior vena cava

Correct Answer: A

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Question 5
In the context of sense organs, what is the primary function of the cochlea in the ear?
Correct A. To detect sound waves
B. To regulate body temperature
C. To produce hormones that stimulate hunger
D. To detect light

Correct Answer: A

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Question 6
In the process of osmoregulation, the kidneys play a crucial role in maintaining the balance of what in the body?
A. Electrolytes
B. pH levels
Correct C. Water balance
D. Blood pressure

Correct Answer: C

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Question 7
The diagram below shows the structure of a bacterial cell. Identify the part labeled 'A'?
Correct A. Cell wall
B. Cytoplasm
C. Nucleus
D. Mitochondria

Correct Answer: A

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Question 8
In the process of photosynthesis, what is the byproduct of the light-dep\endent reactions?
A. ATP
B. NADPH
Correct C. Oxygen
D. Glu\cose

Correct Answer: C

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Question 9
The diagram below shows the structure of a neuron. Identify the part labeled 'B'?
A. D\endrite
Correct B. Axon
C. Cell body
D. Myelin sheath

Correct Answer: B

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Question 10
In the process of digestion, what is the primary function of the pancreas?
A. To produce bile
Correct B. To produce digestive enzymes
C. To absorb nutrients
D. To store glycogen

Correct Answer: B

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Question 11
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'R'?
Correct A. 0.8
B. 0.6
C. 0.4
D. 0.2

Correct Answer: A

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Question 12
A neuron is stimulated by a 10 mV depolarization. If the neuron has a resting membrane potential of -70 mV, what is the total membrane potential?
Correct A. -60 mV
B. -50 mV
C. -40 mV
D. -30 mV

Correct Answer: A

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Question 13
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 14
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. If a sample of 50 individuals is taken, what is the probability that the sample mean height is greater than 175 cm?
Correct A. 0.05
B. 0.10
C. 0.15
D. 0.20

Correct Answer: A

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Question 15
A diagram of the human heart is shown below. Which part of the heart is responsible for pumping blood to the lungs?
A. Ventricle
B. Atrium
Correct C. Pulmonary artery
D. Aorta

Correct Answer: C

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