POST UTME UNIBEN 2017 Biology | Objective

Prepare for your exams with POST UTME UNIBEN questions? Reviewing past/model 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 View Details
In a typical e\cosystem, what is the primary role of decomposers in the nutrient cycle?
Correct A. To break down dead organic matter into simpler compounds
B. To synthesize complex organic molecules from inorganic compounds
C. To produce oxygen through photosynthesis
D. To consume other organisms for energy

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2 View Details
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 undergo osmosis

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3 View Details
A diagram of a human eye is shown below. What is the function of the part labeled 'A'?
Correct A. To focus light onto the retina
B. To detect light intensity
C. To regulate pupil size
D. To produce tears

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4 View Details
A population of bacteria is growing exponentially. If the initial population size is 100 and the growth rate is 20% per hour, what will be the population size after 3 hours?
A. 1000
B. 2000
Correct C. 4000
D. 8000

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5 View Details
A diagram of a simple e\cosystem is shown below. What is the role of the decomposers in this e\cosystem?
Correct A. To break down dead organic matter into simpler compounds
B. To synthesize complex organic molecules from inorganic compounds
C. To produce oxygen through photosynthesis
D. To consume other organisms for energy

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6 View Details
In a eukaryotic cell, the process of cell division that results in the production of four daughter cells is known as
Correct A. Mitosis
B. Meiosis
C. Binary Fission
D. Endoreduplication

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7 View Details
The process by which plants convert light energy into chemical energy is known as
Correct A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8 View Details
The type of tissue that is composed of a mixture of nerve and muscle cells is known as
A. Connective Tissue
B. Epithelial Tissue
C. Muscle Tissue
Correct D. Nervous Tissue

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9 View Details
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Genetic Drift
B. Mutation
C. Gene Flow
Correct D. Heritability

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10 View Details
The type of reproduction that involves the fusion of male and female gametes is known as
A. Asexual Reproduction
Correct B. Sexual Reproduction
C. Binary Fission
D. Budding

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11 View Details
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'R'?
Correct A. 0.8
B. 0.6
C. 0.4
D. 0.2

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12 View Details
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. If 1.0 mol of gas is added to the flask, what is the new pressure?
A. 2.5 atm
Correct B. 3.0 atm
C. 3.5 atm
D. 4.0 atm

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13 View Details
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
Correct A. 0.25
B. 0.5
C. 0.75
D. 0.9

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14 View Details
A 0.1 M solution of NaOH is mixed with a 0.1 M solution of HCl. What is the pH of the resulting solution?
A. 1
Correct B. 7
C. 10
D. 14

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15 View Details
A population of rabbits is growing according to the \logistic growth equation. If the initial population is 100, the carrying capacity is 1000, and the growth rate is 0.1, what is the population after 5 years?
A. 500
B. 700
C. 900
Correct D. 1000

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16 View Details
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 NOT a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
Correct C. Nitrogen
D. Water

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17 View Details
In the human body, the pancreas secretes two main hormones: insulin and glucagon. What is the primary function of insulin?
Correct A. To regulate blood sugar levels
B. To stimulate digestion
C. To stimulate the heart rate
D. To regulate body temperature

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18 View Details
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

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19 View Details
The human eye has a unique structure that allows it to detect light and transmit visual information to the brain. What is the primary function of the retina?
A. To focus light onto the retina
Correct B. To transmit visual information to the brain
C. To regulate the amount of light entering the eye
D. To produce tears to lubricate the eye

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20 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 enzymes is responsible for breaking down proteins?
A. Amylase
B. Lipase
Correct C. Tryp\sin
D. Lactase

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21 View Details
In the context of photosynthesis, what is the role of the enzyme RuBisCO in the Calvin cycle?
Correct A. It catalyzes the fixation of CO2 into a 3-carbon molecule.
B. It is involved in the light-dep\endent reactions of photosynthesis.
C. It is a key enzyme in the breakdown of starch to glu\cose.
D. It is responsible for the reduction of NADP+ to NADPH.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22 View Details
A patient is diagnosed with a condition characterized by the presence of abnormal proteins in the brain. Which of the following is a likely cause of this condition?
Correct A. A genetic mutation in the gene encoding the protein.
B. A viral infection that causes the production of abnormal proteins.
C. A bacterial infection that leads to inflammation in the brain.
D. A nutritional deficiency that affects protein synthesis.

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23 View Details
In the context of digestion, what is the primary function of the enzyme amylase?
A. It breaks down proteins into smaller peptides.
Correct B. It catalyzes the hydrolysis of starch into maltose.
C. It is involved in the absorption of fats in the small intestine.
D. It is responsible for the breakdown of cellulose in plant cell walls.

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24 View Details
A diagram of the human eye is shown below. Which of the following structures is responsible for detecting light and initiating the visual signal?
A. The cornea.
B. The iris.
Correct C. The retina.
D. The lens.

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25 View Details
A diagram of the human nervous system is shown below. Which of the following structures is responsible for transmitting signals from the brain to the muscles?
A. The spinal cord.
Correct B. The nerve.
C. The brain.
D. The muscle.

Correct Answer: B

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