POST UTME COAL CITY UNIVERSITY 2017 Biology | Objective

Are you preparing for POST UTME COAL CITY UNIVERSITY exams? Reviewing past 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.

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Question 1
In the context of the nervous system, what is the primary function of the cerebellum?
Correct A. To integrate sensory information and coordinate motor responses
B. To regulate body temperature
C. To control hunger and thirst
D. To produce hormones

Correct Answer: A

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Question 2
A researcher is studying the effects of a new medication on the cardiovascular system. Which of the following is a potential side effect of the medication?
A. Hypertension
Correct B. Hypotension
C. Bradycardia
D. Tachycardia

Correct Answer: B

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Question 3
A bio\logist is studying the classification of living organisms. Which of the following is a characteristic of prokaryotic cells?
A. Presence of a true nucleus
B. Presence of mitochondria
Correct C. Lack of a true nucleus
D. Presence of a cell wall

Correct Answer: C

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Question 4
A medical researcher is studying the effects of a new vaccine on the immune system. Which of the following is a potential mechanism of action of the vaccine?
A. Activation of T-cells
Correct B. Activation of B-cells
C. Inhibition of cytokine production
D. Enhancement of antibody production

Correct Answer: B

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Question 5
A bio\logist is studying the structure of a cell. Which of the following is a component of the \endoplasmic reticulum?
A. Mitochondria
B. Golgi apparatus
Correct C. Endoplasmic reticulum
D. Lysosome

Correct Answer: C

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Question 6
In a eukaryotic cell, the \endoplasmic reticulum is involved in the synthesis of proteins that are destined for secretion or for use within the cell. Which of the following statements is true about the \endoplasmic reticulum?
A. The \endoplasmic reticulum is a type of organelle found in prokaryotic cells.
B. The \endoplasmic reticulum is involved in the synthesis of proteins that are destined for use within the cell.
C. The \endoplasmic reticulum is a type of organelle found in eukaryotic cells.
Correct D. The \endoplasmic reticulum is involved in the synthesis of proteins that are destined for secretion.

Correct Answer: D

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Question 7
A population of rabbits is growing according to the \logistic growth model. The carrying capacity of the population is 1000 rabbits. If the initial population size is 100 rabbits, what is the population size after 5 years?
A. 500 rabbits
B. 750 rabbits
Correct C. 1000 rabbits
D. 1250 rabbits

Correct Answer: C

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Question 8
A diagram of a plant cell is shown below.
A. The cell wall is located outside the cell membrane.
Correct B. The chloroplasts are responsible for photosynthesis.
C. The vacuole is responsible for storing water and nutrients.
D. The cell membrane is permeable to all subs\tances.

Correct Answer: B

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Question 9
A diagram of a simple e\cosystem is shown below.
A. The herbivore is the primary producer in the e\cosystem.
B. The carnivore is the primary consumer in the e\cosystem.
Correct C. The plant is the primary producer in the e\cosystem.
D. The herbivore is the secondary consumer in the e\cosystem.

Correct Answer: C

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Question 10
A diagram of a simple food chain is shown below.
A. The herbivore is the primary producer in the food chain.
B. The carnivore is the primary consumer in the food chain.
Correct C. The plant is the primary producer in the food chain.
D. The herbivore is the secondary consumer in the food chain.

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. 0.48
D. 0.72

Correct Answer: B

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Question 12
A bio\logist is studying the respiration of a plant in a controlled environment. The plant is placed in a sealed chamber with a cons\tant temperature of 25°C and a relative humidity of 60%. The plant is illuminated with a light intensity of 100 μmol/m²s. What is the rate of photosynthesis in the plant?
A. 1.5
Correct B. 2.5
C. 3.5
D. 4.5

Correct Answer: B

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Question 13
A geneticist is studying the inheri\tance of a trait in a family. The trait is determined by a \single gene with two alleles: 'A' and 'a'. The geneticist wants to determine the genotype of the offspring of a cross between two heterozygous parents. What is the probability that the offspring will be homozygous recessive?
Correct A. 0.25
B. 0.50
C. 0.75
D. 0.90

Correct Answer: A

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Question 14
A bio\logist is studying the structure of a cell. The cell has a nucleus, mitochondria, and a cell membrane. What is the function of the mitochondria?
A. protein synthesis
Correct B. energy production
C. cellular respiration
D. cell division

Correct Answer: B

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Question 15
A geneticist is studying the inheri\tance of a trait in a family. The trait is determined by a \single gene with two alleles: 'A' and 'a'. The geneticist wants to determine the genotype of the offspring of a cross between a homozygous dominant parent and a heterozygous parent. What is the probability that the offspring will be homozygous recessive?
A. 0.25
Correct B. 0.50
C. 0.75
D. 0.90

Correct Answer: B

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Question 16
In a eukaryotic cell, the process of photosynthesis occurs in the mitochondria.
A. True
Correct B. False
C. Photosynthesis occurs in the chloroplasts
D. Photosynthesis occurs in the nucleus

Correct Answer: B

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Question 17
The process of cellular respiration is a series of chemical reactions that occur in the mitochondria of a cell, which converts glu\cose into carbon dioxide and water.
Correct A. True
B. False
C. Cellular respiration occurs in the chloroplasts
D. Cellular respiration occurs in the nucleus

Correct Answer: A

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Question 18
The process of mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell.
Correct A. True
B. False
C. Mitosis results in four daughter cells
D. Mitosis results in two daughter cells that are genetically different from the parent cell

Correct Answer: A

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Question 19
The process of meiosis is a type of cell division that results in four daughter cells that are genetically different from the parent cell.
Correct A. True
B. False
C. Meiosis results in two daughter cells
D. Meiosis results in four daughter cells that are genetically identical to the parent cell

Correct Answer: A

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Question 20
The process of photosynthesis occurs in the chloroplasts of plant cells.
Correct A. True
B. False
C. Photosynthesis occurs in the mitochondria
D. Photosynthesis occurs in the nucleus

Correct Answer: A

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Question 21
In the context of hormonal coordination, what is the primary function of the hypothalamus in regulating body temperature?
A. To maintain a stable body temperature through sweating and shivering
Correct B. To regulate body temperature through the release of hormones
C. To maintain a stable body temperature through the use of external heat sources
D. To regulate body temperature through the use of internal heat sources

Correct Answer: B

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Question 22
A researcher is studying the effects of antibiotics on bacterial growth. Which of the following is a characteristic of antibiotic resis\tance in bacteria?
A. The ability of bacteria to grow in the presence of antibiotics
B. The ability of bacteria to produce enzymes that break down antibiotics
Correct C. The ability of bacteria to develop a resis\tance to antibiotics over time
D. The ability of bacteria to produce toxins that kill other bacteria

Correct Answer: C

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Question 23
In the context of eco\logy, what is the primary function of a keystone species in an e\cosystem?
A. To regulate the population of other species in the e\cosystem
B. To provide a source of food for other species in the e\cosystem
Correct C. To maintain the structure of the e\cosystem through its presence
D. To regulate the climate of the e\cosystem

Correct Answer: C

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Question 24
A cell is undergoing mitosis. Which of the following is a characteristic of the prophase stage?
Correct A. The chromosomes are condensed and visible under a microscope
B. The nuclear envelope is broken down and the chromosomes are released
C. The chromosomes are duplicated and the cell is preparing for cytokinesis
D. The cell is in the process of interphase and the chromosomes are not visible

Correct Answer: A

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Question 25
A researcher is studying the structure of a plant cell. Which of the following is a characteristic of the cell wall?
Correct A. It is composed of cellulose and provides structural support to the cell
B. It is composed of proteins and provides protection to the cell
C. It is composed of lipids and provides insulation to the cell
D. It is composed of carbohydrates and provides energy to the cell

Correct Answer: A

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