POST UTME UNIBEN 2024 Biology | Objective

Are you preparing for POST UTME UNIBEN exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 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 osmoregulation, what is the primary function of the hormone vasopres\sin in the kidneys?
Correct A. Increa\sing water reabsorption in the collecting ducts
B. Increa\sing water excretion in the collecting ducts
C. Increa\sing sodium reabsorption in the proximal convoluted tubule
D. Increa\sing potassium excretion in the distal convoluted tubule

Correct Answer: A

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Question 2
A diagram of the xylem and phloem tissues in a plant stem is shown below. What is the primary function of the xylem tissue?
Correct A. Transporting water and minerals from the roots to the leaves
B. Transporting sugars and other organic compounds from the leaves to the rest of the plant
C. Supporting the structure of the plant
D. Regulating the plant's water balance

Correct Answer: A

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Question 3
A diagram of the human nervous system is shown below. What is the primary function of the cerebellum?
A. Regulating body temperature
B. Controlling voluntary movements
C. Proces\sing sensory information
Correct D. Maintaining posture and balance

Correct Answer: D

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Question 4
A diagram of the human excretory system is shown below. What is the primary function of the kidneys?
A. Regulating blood pressure
B. Maintaining electrolyte balance
Correct C. Removing waste products from the blood
D. Producing hormones that regulate various bodily functions

Correct Answer: C

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Question 5
A diagram of the human respiratory system is shown below. What is the primary function of the lungs?
A. Regulating body temperature
B. Maintaining acid-base balance
C. Removing waste products from the blood
Correct D. Oxygenating the blood

Correct Answer: D

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Question 6
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope. What is the name of the stage during which this occurs?
Correct A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: A

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Question 7
A patient is diagnosed with a bacterial infection. The bacteria are gram-positive and have a characteristic 'safety pin' appearance under the microscope. What is the most likely genus of the bacteria?
Correct A. Staphylococcus
B. Streptococcus
C. Bacillus
D. Clostridium

Correct Answer: A

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Question 8
A diagram of the human brain is shown below. Identify the part of the brain that is responsible for proces\sing visual information.
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Frontal lobe

Correct Answer: A

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Question 9
A patient is experiencing difficulty breathing. The patient's oxygen saturation is low, and the respiratory rate is high. What is the most likely diagnosis?
A. Asthma
Correct B. Chronic obstructive pulmonary disease (COPD)
C. Pneumonia
D. Pulmonary embolism

Correct Answer: B

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Question 10
A diagram of the human respiratory system is shown below. Identify the part of the system that is responsible for exchanging oxygen and carbon dioxide.
A. Trachea
B. Bronchi
Correct C. Alveoli
D. Diaphragm

Correct Answer: C

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Question 11
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of blood pressure
Correct C. Stress response and adaptation
D. Regulation of appetite

Correct Answer: C

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Question 12
A genetic disorder is caused by a mutation in a gene that codes for a protein involved in DNA replication. Which type of mutation is most likely responsible?
Correct A. Point mutation
B. Frameshift mutation
C. Deletion mutation
D. Insertion mutation

Correct Answer: A

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Question 13
A plant cell has a cell wall composed of cellulose, hemicellulose, and pectin. What is the primary function of the cell wall?
Correct A. Support and structure
B. Transport of nutrients
C. Regulation of water content
D. Protection against pathogens

Correct Answer: A

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Question 14
A diagram of a xylem vessel is shown below. What is the primary function of the xylem vessel?
Correct A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Support and structure
D. Protection against pathogens

Correct Answer: A

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Question 15
A diagram of a plant cell is shown below. What is the primary function of the mitochondria?
A. Regulation of cell growth
Correct B. Production of ATP
C. Transport of nutrients
D. Protection against pathogens

Correct Answer: B

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Question 16
A diagram of a human eye is shown below. What is the primary function of the retina?
A. Regulation of pupil size
B. Production of tears
Correct C. Detection of light and color
D. Protection against pathogens

Correct Answer: C

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Question 17
A diagram of a neuron is shown below. What is the primary function of the d\endrites?
Correct A. Transmission of signals
B. Production of neurotransmitters
C. Regulation of cell growth
D. Protection against pathogens

Correct Answer: A

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Question 18
A diagram of a plant cell is shown below. What is the primary function of the chloroplast?
A. Regulation of cell growth
Correct B. Production of ATP
C. Transport of nutrients
D. Protection against pathogens

Correct Answer: B

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Question 19
A diagram of a human heart is shown below. What is the primary function of the atria?
Correct A. Pumping blood to the lungs
B. Pumping blood to the body
C. Regulation of heart rate
D. Protection against pathogens

Correct Answer: A

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Question 20
The process of cellular respiration involves the breakdown of glu\cose to produce ATP, which is then used to power the cell's various activities. Which of the following is a key intermediate in the citric acid cycle?
A. Isocitrate
B. α-Ketoglutarate
Correct C. Succinyl-CoA
D. Fumarate

Correct Answer: C

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Question 21
The sense organ responsible for detecting changes in sound pressure is the?
Correct A. Ear
B. Eye
C. Nose
D. Mouth

Correct Answer: A

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Question 22
The microorganism responsible for cau\sing tuberculosis is the?
Correct A. Mycobacterium tuberculosis
B. Escherichia coli
C. Staphylococcus aureus
D. Pseudomonas aeruginosa

Correct Answer: A

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Question 23
The biome characterized by a high level of biodiversity and a complex e\cosystem is the?
Correct A. Rainforest
B. Desert
C. Grassland
D. Tundra

Correct Answer: A

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Question 24
The hormone responsible for regulating blood sugar levels is the?
Correct A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroxine

Correct Answer: A

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Question 25
The type of eco\logical cycle that involves the movement of energy from one trophic level to the next is the?
Correct A. Food chain
B. Food web
C. Decomposition
D. Nutrient cycle

Correct Answer: A

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