POST UTME RHEMA UNIVERSITY 2023 Biology | Objective

Are you preparing for POST UTME RHEMA UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2023 Biology (Objective) questions designed to simulate the real exam environment.

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Question 1
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the Hardy-Weinberg principle is applied, 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
The xylem sap of a plant contains 0.15 M glu\cose. If the plant has a transpiration stream rate of 0.05 m/s, what is the rate of glu\cose transport in the xylem sap?
Correct A. 0.0075 mol/m^2s
B. 0.0125 mol/m^2s
C. 0.0175 mol/m^2s
D. 0.0225 mol/m^2s

Correct Answer: A

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Question 3
A diagram of the human nervous system is shown below.
A. The brain is responsible for controlling voluntary movements.
B. The spinal cord is responsible for controlling involuntary movements.
Correct C. The brain and spinal cord work together to control voluntary and involuntary movements.
D. The brain is responsible for controlling involuntary movements.

Correct Answer: C

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Question 4
The Hardy-Weinberg principle states that the frequency of a gene in a population will remain cons\tant from generation to generation if the following conditions are met.
A. No mutation occurs.
B. No gene flow occurs.
C. No genetic drift occurs.
Correct D. All of the above.

Correct Answer: D

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Question 5
A diagram of the xylem and phloem tissues in a plant is shown below.
Correct A. The xylem tissue is responsible for transporting water and minerals.
B. The phloem tissue is responsible for transporting sugars and other organic compounds.
C. Both the xylem and phloem tissues are responsible for transporting water and minerals.
D. Neither the xylem nor phloem tissues are responsible for transporting water and minerals.

Correct Answer: A

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Question 6
In a eukaryotic cell, the process of cell division that results in the production of four daughter cells, each with the same number of chromosomes as the parent cell, is known as:
Correct A. Mitosis
B. Meiosis
C. Binary Fission
D. Endoreduplication

Correct Answer: A

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Question 7
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. Which of the following best describes the type of enzyme-substrate interaction?
A. Competitive Inhibition
Correct B. Non-Competitive Inhibition
C. Allosteric Regulation
D. Cooperative Binding

Correct Answer: B

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Question 8
In a photosynthetic reaction, which of the following is the primary electron acceptor?
A. P680
B. P700
Correct C. Pheophytin
D. Plastocyanin

Correct Answer: C

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Question 9
The diagram below shows a cross-section of a plant root. Which of the following is the primary function of the cells in the \endodermis?
Correct A. Water and nutrient uptake
B. Support and structure
C. Storage and transport
D. Regulation of gas exchange

Correct Answer: A

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Question 10
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. Which of the following best describes the type of enzyme-substrate interaction?
Correct A. Competitive Inhibition
B. Non-Competitive Inhibition
C. Allosteric Regulation
D. Cooperative Binding

Correct Answer: A

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Question 11
In the context of evolutionary theories, what is the primary mechanism driving the process of speciation in allopatric populations?
A. Genetic drift
B. Gene flow
Correct C. Natural selection
D. Mutation

Correct Answer: C

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Question 12
A diagram of a plant's xylem is shown below. What is the primary function of the xylem in this plant?
Correct A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Support and structure
D. Storage of nutrients

Correct Answer: A

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Question 13
In the context of cell division, what is the primary function of the spindle fibers during mitosis?
Correct A. Separation of chromosomes
B. Attachment of chromosomes to the spindle pole
C. Formation of the nuclear envelope
D. Condensation of chromatin

Correct Answer: A

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Question 14
A diagram of a human eye is shown below. What is the primary function of the retina in this eye?
Correct A. Detection of light
B. Formation of the visual image
C. Transmission of nerve impulses
D. Regulation of pupil size

Correct Answer: A

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Question 15
In the context of eco\logical cycles, what is the primary function of decomposers in the e\cosystem?
A. Production of organic compounds
Correct B. Breakdown of organic compounds
C. Absorption of nutrients
D. Release of oxygen

Correct Answer: B

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Question 16
In a eukaryotic cell, the process of photosynthesis occurs in the following organelle:
A. Mitochondria
Correct B. Chloroplast
C. Nucleus
D. Endoplasmic Reticulum

Correct Answer: B

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Question 17
The process of digestion in the human body \begins in the:
Correct A. Mouth
B. Stomach
C. Small Intestine
D. Large Intestine

Correct Answer: A

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Question 18
The type of tissue that is found in the walls of blood vessels is:
A. Epithelial Tissue
Correct B. Connective Tissue
C. Muscle Tissue
D. Nervous Tissue

Correct Answer: B

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Question 19
The process of asexual reproduction in which a new individual is produced from a \single parent is called:
Correct A. Binary Fission
B. Budding
C. Fragmentation
D. Spore Formation

Correct Answer: A

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Question 20
The type of excretory system found in humans is:
Correct A. Closed System
B. Open System
C. Partially Closed System
D. Partially Open System

Correct Answer: A

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Question 21
The process of osmoregulation in which the body maintains a stable concentration of solutes in the blood is called:
A. Osmosis
B. Diffusion
Correct C. Active Transport
D. Passive Transport

Correct Answer: C

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Question 22
The classification of living things based on their cell structure is called:
A. Binary Fission
B. Cell Division
Correct C. Cell Wall
D. Cell Membrane

Correct Answer: C

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Question 23
The process of photosynthesis in plants occurs in the following organelle:
A. Mitochondria
Correct B. Chloroplast
C. Nucleus
D. Endoplasmic Reticulum

Correct Answer: B

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Question 24
The type of tissue that is found in the walls of blood vessels is:
A. Epithelial Tissue
Correct B. Connective Tissue
C. Muscle Tissue
D. Nervous Tissue

Correct Answer: B

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Question 25
The process of asexual reproduction in which a new individual is produced from a \single parent is called:
Correct A. Binary Fission
B. Budding
C. Fragmentation
D. Spore Formation

Correct Answer: A

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