POST UTME UNIOSUN 2022 Biology | Objective

Are you preparing for POST UTME UNIOSUN exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 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 tissue classification, what is the primary difference between epithelial and connective tissue?
Correct A. Epithelial tissue is composed of tightly packed cells, whereas connective tissue is composed of loosely packed cells.
B. Epithelial tissue is involved in secretion, whereas connective tissue is involved in support.
C. Epithelial tissue is found in glands, whereas connective tissue is found in organs.
D. Epithelial tissue is composed of a basement membrane, whereas connective tissue is composed of a fibrous matrix.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
A researcher is studying the effects of climate change on a specific e\cosystem. Which of the following biomes is most likely to be affected by climate change?
Correct A. Tropical rainforest
B. Desert
C. Grassland
D. Tundra

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
A patient is experiencing symptoms of a viral infection. Which of the following types of microorganisms is most likely responsible?
A. Bacteria
B. Fungi
Correct C. Viruses
D. Protozoa

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
A diagram of the human nervous system is shown below. What is the function of the part labeled A?
Correct A. To transmit sensory information to the brain
B. To regulate body temperature
C. To control voluntary movements
D. To produce hormones

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
A diagram of the human digestive system is shown below. What is the function of the part labeled B?
A. To absorb nutrients into the bloodstream
Correct B. To break down proteins into amino acids
C. To store waste until it is eliminated
D. To produce hormones that regulate digestion

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
Correct A. 0.36
B. 0.64
C. 0.72
D. 0.84

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
A scientist is studying the effect of temperature on the rate of enzyme-catalyzed reactions. If the reaction rate is doubled when the temperature is increased by 10°C, what is the Q10 value of the reaction?
A. 1.25
B. 1.5
Correct C. 2.0
D. 2.5

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
A cell is in the G2 phase of the cell cycle. If the cell is treated with a drug that inhibits DNA replication, what will happen to the cell?
A. The cell will undergo mitosis and divide
B. The cell will enter the G1 phase
C. The cell will die
Correct D. The cell will enter the G0 phase

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
A patient is diagnosed with a bacterial infection caused by a strain of E. coli that is resis\tant to multiple antibiotics. What is the most likely mechanism of resis\tance?
A. Efflux pumps
B. Enzymatic inactivation of antibiotics
C. Target modification
Correct D. All of the above

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
A geneticist is studying the inheri\tance of a trait in a family. If the trait is inherited in an autosomal dominant pattern, what is the probability that a child will inherit the dominant allele?
A. 0.25
Correct B. 0.5
C. 0.75
D. 1.0

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
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

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
The process of mitosis is divided into what four stages?
Correct A. Prophase, Metaphase, Anaphase, Telophase
B. Prophase, Metaphase, Cytokinesis, Telophase
C. Prophase, Metaphase, Anaphase, Cytokinesis
D. Prophase, Telophase, Anaphase, Metaphase

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
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 subs\tances
C. To synthesize proteins
D. To store genetic information

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
The process of respiration involves the breakdown of glu\cose to produce what?
A. ATP and water
Correct B. ATP and carbon dioxide
C. Water and carbon dioxide
D. ATP and oxygen

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
The diagram below shows the structure of the human eye. What is the function of the retina?
A. To focus light on the lens
Correct B. To detect light and transmit signals to the brain
C. To regulate the amount of light entering the eye
D. To produce tears

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
A study on the genetic variation of a population found that the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'A'?
A. 0.2
B. 0.4
C. 0.6
Correct D. 0.8

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
A plant cell has a vacuole that contains 0.5 M sucrose solution. If the cell membrane is selectively permeable, what is the concentration of sucrose in the cytosol after 10 minutes?
A. 0.1 M
Correct B. 0.3 M
C. 0.5 M
D. 0.7 M

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
A diagram of the human respiratory system is shown below. Which part of the system is responsible for the exchange of oxygen and carbon dioxide?
Correct A. A
B. B
C. C
D. D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
A diagram of the human digestive system is shown below. Which part of the system is responsible for the breakdown of proteins?
A. A
Correct B. B
C. C
D. D

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
A diagram of the human circulatory system is shown below. Which part of the system is responsible for the exchange of oxygen and carbon dioxide?
Correct A. A
B. B
C. C
D. D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
In the context of tissue organization, what is the primary function of the basement membrane?
A. To provide structural support to the tissue
Correct B. To facilitate the exchange of nutrients and waste products
C. To act as a barrier against pathogens and toxins
D. To regulate the movement of cells within the tissue

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
A population of rabbits is introduced to a new island with limited resources. Which of the following eco\logical concepts best describes the expected outcome?
Correct A. Carrying capacity
B. Predator-prey dynamics
C. Competition for resources
D. Succession

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
Asexual reproduction in plants can occur through which of the following methods?
A. Budding
B. Fragmentation
Correct C. Vegetative propagation
D. Spore formation

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
The process of photosynthesis in plants involves the conversion of light energy into chemical energy through which of the following reactions?
Correct A. Light-dep\endent reactions
B. Light-indep\endent reactions
C. Calvin cycle
D. Electron transport chain

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
The classification of living organisms into kingdoms is based on which of the following characteristics?
A. Cell structure
B. Metabolism
C. Cellular organization
Correct D. Genetic material

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support