POST UTME ELIZADE UNIVERSITY 2018 Biology | Objective

Are you preparing for POST UTME ELIZADE UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2018 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 evolutionary theory, what is the primary mechanism by which species adapt to changing environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

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Question 2
What is the primary function of the mitochondria in a eukaryotic cell?
A. Protein Synthesis
B. Cell Signaling
Correct C. Energy Production
D. Cell Division

Correct Answer: C

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Question 3
In the context of eco\logy, what is the term for the movement of organisms from one habitat to another?
A. Migration
B. Hibernation
C. Metamorphosis
Correct D. Dispersal

Correct Answer: D

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Question 4
What is the term for the process by which plants convert light energy into chemical energy?
Correct A. Photosynthesis
B. Respiration
C. Transpiration
D. Evaporation

Correct Answer: A

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Question 5
In the context of cell structure, what is the term for the region of the cell where proteins are synthesized?
A. Nucleus
B. Mitochondria
C. Endoplasmic Reticulum
Correct D. Ribosome

Correct Answer: D

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Question 6
A study on the genetic variation of the human population found that the frequency of the ABO blood group alleles in a particular population is as follows: A = 0.4, B = 0.2, AB = 0.1, and O = 0.3. What is the probability that a randomly selected individual from this population will have the ABO blood group A?
Correct A. 0.4
B. 0.2
C. 0.1
D. 0.3

Correct Answer: A

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Question 7
A diagram of the human respiratory system is shown below. What is the function of the alveoli?
Correct A. Exchange of oxygen and carbon dioxide
B. Filtering of dust and other particles
C. Production of mucus
D. Regulation of body temperature

Correct Answer: A

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Question 8
A plant has a photosynthetic rate of 10 mg CO2/hour. If the plant is exposed to light for 8 hours, how much CO2 will be absorbed by the plant?
A. 80 mg
Correct B. 100 mg
C. 120 mg
D. 140 mg

Correct Answer: B

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Question 9
A diagram of the human digestive system is shown below. What is the function of the pancreas?
A. Production of mucus
B. Production of bile
Correct C. Production of digestive enzymes
D. Absorption of nutrients

Correct Answer: C

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Question 10
A study on the effect of pH on the activity of the enzyme lactase found that the activity of the enzyme increased by 20% for every 1 unit decrease in pH. If the initial pH is 7, what will be the activity of the enzyme at pH 5?
A. 120%
B. 140%
Correct C. 160%
D. 180%

Correct Answer: C

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Question 11
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. 0.16
D. 0.04

Correct Answer: B

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Question 12
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'Rr'?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 13
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
Correct A. photosynthesis
B. respiration
C. cell division
D. cell signaling

Correct Answer: A

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Question 14
A diagram of a human digestive system is shown below. What is the function of the structure labeled 'B'?
A. absorption of nutrients
Correct B. breakdown of proteins
C. production of digestive enzymes
D. storage of food

Correct Answer: B

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Question 15
A diagram of a human eye is shown below. What is the function of the structure labeled 'C'?
Correct A. re\fraction of light
B. absorption of light
C. reflection of light
D. production of light

Correct Answer: A

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Question 16
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
Correct C. No gene flow
D. No genetic drift

Correct Answer: C

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Question 17
In the context of the nervous system, what is the primary function of the neurotransmitter acetylcholine?
A. Excitation of muscle fibers
B. Inhibition of muscle fibers
Correct C. Transmission of nerve impulses
D. Regulation of heart rate

Correct Answer: C

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Question 18
The human body is composed of four main types of tissues: epithelial, connective, muscle, and nervous. Which of the following is a characteristic of epithelial tissue?
A. It is found in the dermis layer of the skin
Correct B. It forms the lining of organs and glands
C. It is composed of muscle fibers
D. It is found in the bone marrow

Correct Answer: B

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Question 19
The process of excretion in humans involves the removal of waste products from the body. Which of the following organs is primarily responsible for excretion?
A. Liver
Correct B. Kidneys
C. Pancreas
D. Spleen

Correct Answer: B

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Question 20
The concept of homeostasis refers to the ability of the body to maintain a stable internal environment despite changes in the external environment. Which of the following is an example of homeostasis?
A. Regulation of body temperature
Correct B. Regulation of blood sugar levels
C. Regulation of blood pressure
D. Regulation of heart rate

Correct Answer: B

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Question 21
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope. What is the name of the stage in which the nuclear envelope breaks down?
Correct A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: A

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Question 22
The xylem is a type of vascular tissue found in plants that is responsible for transporting water and minerals from the roots to the leaves. What is the name of the cell type that makes up the xylem?
Correct A. Tracheids
B. Vessel Elements
C. Fibers
D. Parenchyma

Correct Answer: A

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Question 23
In a desert e\cosystem, the primary producers are typically plants that have adapted to survive in the harsh conditions. What is the name of the type of plant that is commonly found in deserts?
Correct A. Cacti
B. Succulents
C. Grasses
D. Trees

Correct Answer: A

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Question 24
The process of photosynthesis occurs in specialized organelles called chloroplasts. What is the name of the pigment that is responsible for absorbing light energy during photosynthesis?
Correct A. Chlorophyll a
B. Chlorophyll b
C. Carotenoids
D. Phycobiliproteins

Correct Answer: A

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Question 25
The process of mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell. What is the name of the stage in which the chromosomes line up at the center of the cell?
A. Prophase
Correct B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: B

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