POST UTME BELLS UNIVERSITY 2024 Biology | Objective

Are you preparing for POST UTME BELLS UNIVERSITY 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.

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Question 1
The process of meiosis results in the production of four haploid cells from a diploid cell. Which of the following is a characteristic of meiosis?
A. It involves the replication of DNA
B. It results in the production of four diploid cells
Correct C. It involves the shuffling of genetic material
D. It is a type of mitosis

Correct Answer: C

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Question 2
A population of rabbits is growing at a rate of 20% per year. If the population is currently 1000 rabbits, what will be the population after 5 years?
A. 2000
B. 4000
C. 16000
Correct D. 32000

Correct Answer: D

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Question 3
The diagram below shows the structure of a plant cell. What is the function of the cell wall?
Correct A. To provide structural support
B. To regulate the movement of materials
C. To synthesize proteins
D. To store genetic information

Correct Answer: A

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Question 4
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if certain conditions are met. Which of the following is NOT one of the conditions?
A. Random mating
B. No mutation
C. No gene flow
Correct D. No selection

Correct Answer: D

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Question 5
The diagram below shows the structure of a neuron. What is the function of the d\endrites?
A. To synthesize proteins
B. To store genetic information
Correct C. To receive signals from other neurons
D. To transmit signals to other neurons

Correct Answer: C

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Question 6
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis
Correct D. Protein modification

Correct Answer: D

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Question 7
A plant undergoes a process called photoinhibition when it is exposed to high levels of light. What is the primary cause of photoinhibition?
A. Water stress
B. High temperature
Correct C. High light intensity
D. Low CO2 levels

Correct Answer: C

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Question 8
In a human kidney, what is the primary function of the loop of Henle?
A. Reabsorption of glu\cose
Correct B. Reabsorption of water
C. Excretion of urea
D. Excretion of potassium ions

Correct Answer: B

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Question 9
A cell undergoes a process called apoptosis when it is exposed to high levels of radiation. What is the primary cause of apoptosis?
Correct A. DNA damage
B. Protein synthesis inhibition
C. Cell signaling disruption
D. Mitochondrial dysfunction

Correct Answer: A

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Question 10
In a plant cell, what is the primary function of the vacuole?
A. Protein synthesis
B. Cell signaling
Correct C. Storage of water and ions
D. Lipid synthesis

Correct Answer: C

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Question 11
The process of photosynthesis in plants involves the conversion of light energy into chemical energy in the form of glu\cose. Which of the following is a byproduct of this process?
Correct A. Oxygen
B. Carbon dioxide
C. Water
D. Nitrogen

Correct Answer: A

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Question 12
The human body is composed of various systems, including the circulatory, respiratory, and nervous systems. Which of the following is a function of the circulatory system?
A. Regulation of body temperature
Correct B. Transportation of oxygen and nutrients
C. Removal of waste products
D. Production of hormones

Correct Answer: B

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Question 13
The process of mitosis in eukaryotic cells involves the division of the nucleus into two daughter nuclei. Which of the following stages of mitosis is responsible for the separation of chromosomes?
A. Prophase
B. Metaphase
Correct C. Anaphase
D. Telophase

Correct Answer: C

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Question 14
The classification of living organisms into kingdoms is based on their cell structure and mode of nutrition. Which of the following kingdoms is characterized by the presence of a cell wall and the absence of flagella?
A. Animalia
Correct B. Plantae
C. Fungi
D. Protista

Correct Answer: B

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Question 15
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 enzymes is responsible for the breakdown of proteins?
A. Amylase
B. Lipase
Correct C. Tryp\sin
D. Lactase

Correct Answer: C

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Question 16
In the context of transport systems, what is the primary function of the xylem in plants?
Correct A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Regulation of water potential in plants
D. Maintenance of turgor pressure in plant cells

Correct Answer: A

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Question 17
Which of the following microorganisms is responsible for the spoilage of dairy products?
A. Escherichia coli
Correct B. Staphylococcus aureus
C. Lactobacillus acidophilus
D. Bacillus subtilis

Correct Answer: B

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Question 18
The diagram below shows a cross-section of a plant root. Identify the part labeled 'A'.
Correct A. Xylem
B. Phloem
C. Cortex
D. Endodermis

Correct Answer: A

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Question 19
In the context of eco\logy, what is the primary function of a keystone species?
A. Regulation of population sizes of other species
Correct B. Maintenance of e\cosystem diversity
C. Production of nutrients through decomposition
D. Modification of physical environment

Correct Answer: B

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Question 20
The diagram below shows a simple black and white chemistry apparatus showing a titration setup. Identify the part labeled 'A'.
Correct A. Burette
B. Conical flask
C. Pipette
D. Titration curve

Correct Answer: A

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Question 21
In the context of cellular respiration, what is the primary function of the electron transport chain?
Correct A. To generate ATP from NADH and FADH2
B. To produce water from oxygen and hydrogen ions
C. To synthesize glu\cose from CO2 and H2O
D. To reduce NAD+ to NADH

Correct Answer: A

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Question 22
A plant cell is placed in a solution containing 0.1 M glu\cose. If the cell membrane is permeable to glu\cose, what will happen to the concentration of glu\cose inside the cell?
A. The concentration of glu\cose will increase
Correct B. The concentration of glu\cose will decrease
C. The concentration of glu\cose will remain the same
D. The cell will take up glu\cose by active transport

Correct Answer: B

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Question 23
A geneticist wants to study the inheri\tance of a particular trait in a population of Drosophila melanogaster. Which type of genetic cross would be most suitable for this study?
A. Backcross
Correct B. Testcross
C. Inbred line
D. F2 generation

Correct Answer: B

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Question 24
A bio\logist is studying the growth of a population of bacteria in a controlled environment. Which of the following equations represents the exponential growth of the population?
Correct A. \( \frac{dP}{dt} = rP \)
B. \( \frac{dP}{dt} = r \)
C. \( \frac{dP}{dt} = -rP \)
D. \( \frac{dP}{dt} = -r \)

Correct Answer: A

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Question 25
A plant is placed in a greenhouse with a temperature of 25°C and a relative humidity of 60%. What is the expected rate of transpiration from the plant?
A. High
Correct B. Low
C. Moderate
D. Variable

Correct Answer: B

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