POST UTME RSU 2017 Biology | Objective

Are you preparing for POST UTME RSU exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a photosynthetic pathway, what is the primary function of the enzyme RuBisCO?
Correct A. Fixation of CO2
B. Reduction of NADP+
C. Regeneration of RuBP
D. Oxidation of NADPH

Correct Answer: A

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Question 2
A plant cell is placed in a solution with a high concentration of sucrose. What happens to the cell's turgor pressure?
Correct A. Increases
B. Decreases
C. Remains the same
D. Becomes negative

Correct Answer: A

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Question 3
A diagram of a plant's xylem and phloem is shown below. What is the function of the xylem?
Correct A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Storage of starch and proteins
D. Synthesis of ATP and NADPH

Correct Answer: A

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Question 4
A diagram of a human eye is shown below. What is the function of the lens?
A. B\ending of light rays
Correct B. Re\fraction of light
C. Absorption of light
D. Reflection of light

Correct Answer: B

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Question 5
A diagram of a human reproductive system is shown below. What is the function of the vas deferens?
A. Storage of sperm
Correct B. Transport of sperm
C. Production of testosterone
D. Absorption of nutrients

Correct Answer: B

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Question 6
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
C. Stimulation of the immune system
Correct D. Response to stress and anxiety

Correct Answer: D

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Question 7
A population of Drosophila melanogaster is exposed to a pesticide that causes a 20% reduction in egg-laying capacity. Assuming a generation time of 10 days, what is the expected change in population size after 30 days?
A. -15%
Correct B. -20%
C. -25%
D. -30%

Correct Answer: B

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Question 8
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. Which of the following antibiotics is most likely to be effective against this bacterium?
A. Penicillin G
B. Methicillin
Correct C. Vancomycin
D. Ciprofloxacin

Correct Answer: C

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Question 9
A 2.0 L flask contains a mixture of 0.50 M NaCl and 0.25 M KNO3. What is the total molarity of the solution?
A. 0.50 M
Correct B. 0.75 M
C. 1.00 M
D. 1.25 M

Correct Answer: B

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Question 10
A 50-year-old patient presents with symptoms of hypertension and is prescribed a \beta-blocker. What is the primary mechanism of action of this medication?
A. Inhibition of angioten\sin-converting enzyme (ACE)
B. Blockade of \alpha-adrenergic receptors
Correct C. Blockade of \beta-adrenergic receptors
D. Inhibition of the renin-angioten\sin-aldosterone system (RAAS)

Correct Answer: C

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Question 11
The process of asexual reproduction in which a new individual is produced from a \single parent organism, without the involvement of gametes, is known as:
A. Budding
Correct B. Binary Fission
C. Fragmentation
D. Regeneration

Correct Answer: B

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Question 12
The hormone responsible for the regulation of blood glu\cose levels is:
Correct A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroxine

Correct Answer: A

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Question 13
The process by which plants transport water and minerals from the roots to the leaves is known as:
A. Transpiration
Correct B. Translocation
C. Osmosis
D. Diffusion

Correct Answer: B

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Question 14
The type of variation that occurs due to the presence of different alleles of a gene is known as:
Correct A. Genetic variation
B. Environmental variation
C. Genetic drift
D. Mutation

Correct Answer: A

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Question 15
The process by which the nervous system transmits signals from one neuron to another is known as:
Correct A. Synaptic transmission
B. Neurotransmission
C. Electrical transmission
D. Chemical transmission

Correct Answer: A

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Question 16
The type of reproduction in which an organism produces offspring that are genetically identical to the parent is known as:
Correct A. Asexual reproduction
B. Sexual reproduction
C. Vegetative reproduction
D. Budding

Correct Answer: A

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Question 17
The hormone responsible for the regulation of growth and development in plants is:
Correct A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene

Correct Answer: A

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Question 18
The process by which the body maintains a stable internal environment despite changes in the external environment is known as:
Correct A. Homeostasis
B. Regulation
C. Adaptation
D. Acclimation

Correct Answer: A

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Question 19
The type of variation that occurs due to the presence of different forms of a gene is known as:
Correct A. Genetic variation
B. Environmental variation
C. Genetic drift
D. Mutation

Correct Answer: A

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Question 20
The process by which the body responds to a stimulus is known as:
Correct A. Response
B. Reaction
C. Reflex
D. Habituation

Correct Answer: A

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Question 21
The hormone responsible for the regulation of blood pressure is:
A. Adrenaline
B. Noradrenaline
Correct C. Angioten\sin II
D. Aldosterone

Correct Answer: C

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Question 22
The process by which the body maintains a stable internal environment despite changes in the external environment is known as:
A. Homeostasis
B. Regulation
C. Adaptation
D. Acclimation

Correct Answer: VIEW ANSWER

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Question 23
In the process of osmoregulation, what is the primary mechanism by which the kidney regulates the concentration of ions in the blood?
Correct A. Reabsorption of ions in the renal tubules
B. Excretion of ions in the urine
C. Regulation of ion channels in the renal tubules
D. Hormonal regulation of ion balance

Correct Answer: A

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Question 24
Asexual reproduction in plants can occur through the production of
A. Seeds
Correct B. Spores
C. Buds
D. Rhizomes

Correct Answer: B

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Question 25
The process of mitosis is characterized by the
A. Replication of DNA
B. Separation of chromosomes
C. Formation of a spindle apparatus
Correct D. All of the above

Correct Answer: D

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