POST UTME UI 2024 Biology | Objective

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Question 1 View Details
In a photosynthetic pathway, which of the following is the primary function of the enzyme RuBisCO?
Correct A. Fixation of CO2
B. Reduction of CO2
C. Oxidation of CO2
D. Decarboxylation of CO2

Correct Answer: A

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Question 2 View Details
A population of rabbits is growing \logistically according to the equation dP/dt = rP\( 1-P/K \). If the initial population size is 100 and the carrying capacity is 1000, what is the population size at time t?
A. P(t) = 100 + 900e^\( -rt \)
B. P(t) = 100 + 900e^(rt)
Correct C. P(t) = 100 + 900e^\( -rt \)
D. P(t) = 100 + 900e^(rt)

Correct Answer: C

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Question 3 View Details
A diagram of a plant cell is shown below. Which of the following organelles is responsible for protein synthesis?
A. Nucleus
B. Mitochondria
Correct C. Ribosome
D. Endoplasmic Reticulum

Correct Answer: C

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Question 4 View Details
A diagram of a simple harmonic motion is shown below. Which of the following equations represents the displacement of the object as a function of time?
A. x(t) = A\sin\( \omega t + \phi \)
Correct B. x(t) = A\cos\( \omega t + \phi \)
C. x(t) = A\sin\( \omega t - \phi \)
D. x(t) = A\cos\( \omega t - \phi \)

Correct Answer: B

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Question 5 View Details
A diagram of a human brain is shown below. Which of the following regions is responsible for proces\sing visual information?
A. Frontal Lobe
B. Parietal Lobe
C. Temporal Lobe
Correct D. Occipital Lobe

Correct Answer: D

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Question 6 View Details
The xylem in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
Correct A. It is composed of dead cells.
B. It is responsible for gas exchange.
C. It transports sugars and amino acids.
D. It is composed of living cells.

Correct Answer: A

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Question 7 View Details
The process of photosynthesis in plants involves the conversion of carbon dioxide and water into glu\cose and oxygen. Which of the following is a byproduct of photosynthesis?
Correct A. Glu\cose and oxygen.
B. Carbon dioxide and water.
C. Nitrogen and phosphorus.
D. Sulfur and potassium.

Correct Answer: A

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Question 8 View Details
The human circulatory system is responsible for transporting oxygen and nutrients to cells and removing waste products. Which of the following is a type of blood vessel?
A. Artery.
B. Vein.
C. Capillary.
Correct D. All of the above.

Correct Answer: D

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Question 9 View Details
The process of digestion in the human body involves the breakdown of food into smaller molecules that can be absorbed and utilized by the body. Which of the following is a type of digestive enzyme?
A. Amylase.
B. Lactase.
C. Tryp\sin.
Correct D. All of the above.

Correct Answer: D

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Question 10 View Details
The process of respiration in the human body involves the breakdown of glu\cose to produce energy. Which of the following is a byproduct of cellular respiration?
Correct A. Carbon dioxide and water.
B. Glu\cose and oxygen.
C. Nitrogen and phosphorus.
D. Sulfur and potassium.

Correct Answer: A

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Question 11 View Details
The process of osmoregulation in organisms involves the regulation of water and solute balance across cell membranes. Which of the following is a key mechanism by which cells maintain water balance?
Correct A. Active transport of ions
B. Passive diffusion of water
C. Endocytosis of water
D. Exocytosis of water

Correct Answer: A

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Question 12 View Details
In the context of evolutionary theory, what is the term for the process by which a new species emerges from an existing one?
Correct A. Speciation
B. Adaptation
C. Mutation
D. Genetic drift

Correct Answer: A

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Question 13 View Details
The classification of living things is based on the concept of taxonomy. Which of the following is a level of classification?
Correct A. Domain
B. Kingdom
C. Phylum
D. Species

Correct Answer: A

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Question 14 View Details
The human body is composed of various systems, each with distinct functions. Which of the following systems is responsible for the regulation of body temperature?
A. Nervous system
B. Circulatory system
C. Respiratory system
Correct D. Integumentary system

Correct Answer: D

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Question 15 View Details
The process of excretion involves the removal of waste products from the body. Which of the following organs is primarily responsible for excretion?
Correct A. Kidneys
B. Liver
C. Lungs
D. Skin

Correct Answer: A

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Question 16 View Details
In a population of 1000 individuals, 70% exhibit the recessive allele for a particular trait. If the population is randomly bred, what is the expected frequency of the homozygous dominant genotype?
Correct A. 0.49
B. 0.51
C. 0.55
D. 0.59

Correct Answer: A

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Question 17 View Details
A plant with the genotype AABB is crossed with a plant with the genotype aabb. What is the probability that the offspring will have the genotype Aa?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 18 View Details
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.2 m from its equilibrium position and released from rest. What is the maximum speed of the block?
A. 0.5 m/s
Correct B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s

Correct Answer: B

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Question 19 View Details
A 0.5 M solution of NaOH is mixed with a 0.5 M solution of HCl. What is the pH of the resulting solution?
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 20 View Details
A 10 mL sample of a 0.1 M solution of NaOH is added to a 50 mL sample of a 0.1 M solution of HCl. What is the pH of the resulting solution?
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 21 View Details
In a closed e\cosystem, the rate of photosynthesis is directly proportional to the rate of respiration. Which of the following best describes the relationship between the two processes?
A. Respiration is the reverse of photosynthesis.
B. Photosynthesis and respiration are two separate processes.
Correct C. The rate of photosynthesis is directly proportional to the rate of respiration.
D. Photosynthesis is the source of energy for respiration.

Correct Answer: C

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Question 22 View Details
A population of rabbits is growing exponentially. If the initial population is 100 and the growth rate is 20% per year, what will be the population after 5 years?
A. 1000
B. 2000
C. 4000
Correct D. 8000

Correct Answer: D

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Question 23 View Details
A diagram of a plant cell is shown below. Identify the part labeled A.
Correct A. Cell wall
B. Cell membrane
C. Chloroplast
D. Vacuole

Correct Answer: A

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Question 24 View Details
A species of bird is found only in a specific type of habitat. Which of the following best describes the relationship between the species and its habitat?
A. The species is a predator of the habitat.
B. The species is a prey of the habitat.
C. The species is a symbiont of the habitat.
Correct D. The species is a specialist of the habitat.

Correct Answer: D

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Question 25 View Details
A diagram of a simple harmonic motion is shown below. Identify the part labeled A.
Correct A. Spring
B. Mass
C. Damping
D. Energy

Correct Answer: A

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