Practice Post UTME MADONNA UNIVERSITY biology 2022 Past Questions

Question 1

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. 0.64

B. 0.36

C. 0.16

D. 0.04

Correct Answer: A

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Question 2

A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?

A. Site of protein synthesis

B. Site of cell division

C. Site of cell growth

Correct D. Site of cell differentiation

Correct Answer: D

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Question 3

A diagram of a human respiratory system is shown below. What is the function of the structure labeled 'Y'?

Correct A. Site of gas exchange

B. Site of air filtration

C. Site of air humidification

D. Site of air warming

Correct Answer: A

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Question 4

A diagram of a human digestive system is shown below. What is the function of the structure labeled 'Z'?

A. Site of mechanical digestion

Correct B. Site of chemical digestion

C. Site of absorption

D. Site of elimination

Correct Answer: B

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Question 5

A diagram of a human circulatory system is shown below. What is the function of the structure labeled 'W'?

A. Site of blood filtration

B. Site of blood clotting

C. Site of blood pressure regulation

Correct D. Site of blood flow regulation

Correct Answer: D

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Question 6

In a desert e\cosystem, the primary producers are cacti and succulents. What is the role of these plants in the e\cosystem?

A. They are the primary consumers of the e\cosystem.

Correct B. They are the producers of the e\cosystem.

C. They are the decomposers of the e\cosystem.

D. They are the scavengers of the e\cosystem.

Correct Answer: B

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Question 7

A 2.5-liter solution of 0.5 M NaCl is diluted by adding 1.5 liters of water. What is the new concentration of the solution?

A. 0.25 M

Correct B. 0.3125 M

C. 0.375 M

D. 0.5 M

Correct Answer: B

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Question 8

A diagram of the human eye is shown below.

A. The cornea is the transparent part of the eye.

B. The iris is the colored part of the eye.

Correct C. The pupil is the opening at the center of the eye.

D. The retina is the light-sensitive tissue at the back of the eye.

Correct Answer: C

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Question 9

A 50-kg person is s\tanding on a scale in an elevator. If the elevator accelerates upward at 2 m/s^2, what is the reading on the scale?

A. 490 N

Correct B. 590 N

C. 690 N

D. 790 N

Correct Answer: B

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Question 10

A diagram of the human respiratory system is shown below.

A. The trachea is the tube that carries air from the nose and mouth to the lungs.

B. The bronchi are the tubes that branch off from the trachea to the lungs.

Correct C. The alveoli are the tiny air sacs where gas exchange occurs.

D. The diaphragm is the muscle that separates the chest cavity from the abdominal cavity.

Correct Answer: C

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Question 11

In a typical human cell, the process of meiosis is initiated by the breakdown of the following structure:

Correct A. Nucleus

B. Mitochondria

C. Endoplasmic Reticulum

D. Lysosome

Correct Answer: A

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Question 12

The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?

A. Mitochondria

Correct B. Chloroplast

C. Vacuole

D. Nucleus

Correct Answer: B

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Question 13

The process of mitosis is characterized by the following stages:

Correct A. Prophase, Metaphase, Anaphase, Telophase

B. Interphase, Prophase, Metaphase, Anaphase

C. Prophase, Metaphase, Anaphase, Cytokinesis

D. Interphase, Prophase, Metaphase, Telophase

Correct Answer: A

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Question 14

The diagram below shows the structure of a human eye. Which of the following parts is responsible for detecting light?

A. Iris

B. Cornea

Correct C. Retina

D. Lens

Correct Answer: C

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Question 15

The process of asexual reproduction in plants is characterized by the following method:

A. Budding

Correct B. Fragmentation

C. Regeneration

D. Spore formation

Correct Answer: B

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Question 16

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'?

A. 0.36

Correct B. 0.64

C. 0.48

D. 0.72

Correct Answer: B

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Question 17

A student is studying the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?

A. Mitochondria

Correct B. Chloroplast

C. Vacuole

D. Nucleus

Correct Answer: B

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Question 18

A researcher is studying the excretory system of a frog. Which of the following organs is responsible for the removal of waste products from the body?

A. Liver

Correct B. Kidney

C. Bladder

D. Pancreas

Correct Answer: B

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Question 19

A student is studying the classification of living things. Which of the following kingdoms is characterized by the presence of cell walls made of cellulose?

A. Animalia

B. Fungi

Correct C. Plantae

D. Protista

Correct Answer: C

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Question 20

A researcher is studying the structure of a cell. Which of the following organelles is responsible for protein synthesis?

A. Mitochondria

Correct B. Ribosome

C. Endoplasmic Reticulum

D. Lysosome

Correct Answer: B

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Question 21

In a plant cell, the xylem is responsible for transporting water and minerals from the roots to the leaves through the process of

Correct A. Transpiration

B. Photosynthesis

C. Osmosis

D. Diffusion

Correct Answer: A

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Question 22

The process of respiration in plants involves the breakdown of glu\cose to produce energy in the form of ATP, which is then used to power the movement of

A. Protons

Correct B. Electrons

C. Ions

D. Molecules

Correct Answer: B

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Question 23

The microorganism responsible for cau\sing tuberculosis in humans is

A. Escherichia coli

B. Staphylococcus aureus

Correct C. Mycobacterium tuberculosis

D. Salmonella typhi

Correct Answer: C

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Question 24

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 NOT a product of digestion?

A. Glu\cose

B. Amino acids

C. Fatty acids

Correct D. Water

Correct Answer: D

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Question 25

The classification of living things is based on the following characteristics: cell structure, body organization, metabolism, response to stimuli, and

Correct A. Genetic information

B. Evolutionary history

C. Eco\logical niche

D. Reproduction method

Correct Answer: A

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