POST UTME RHEMA UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of osmoregulation in which the body maintains a stable concentration of solutes in the blood is called:
A. Osmosis
B. Diffusion
C. Active Transport
D. Passive Transport
Question 2
In the context of evolutionary theory, what is the primary mechanism by which natural selection acts on genetic variation within a population?
A. Genetic drift
B. Gene flow
C. Mutation
D. Selection
Question 3
In a eukaryotic cell, the process of photosynthesis occurs in the following organelle:
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Endoplasmic Reticulum
Question 4
A diagram of a human eye is shown below. What is the primary function of the retina in this eye?
A. Detection of light
B. Formation of the visual image
C. Transmission of nerve impulses
D. Regulation of pupil size
Question 5
A diagram of a human reproductive system is shown below. What is the function of the structure labeled 'B'?
A. To produce eggs
B. To transport eggs to the uterus
C. To regulate the menstrual cycle
D. To provide structural support
Question 6
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?
A. Water and nutrient uptake
B. Support and structure
C. Storage and transport
D. Regulation of gas exchange
Question 7
The type of tissue that is found in the walls of blood vessels is:
A. Epithelial Tissue
B. Connective Tissue
C. Muscle Tissue
D. Nervous Tissue
Question 8
A researcher is studying the effect of light intensity on the rate of photosynthesis in a plant. Which of the following is a correct statement about the relationship between light intensity and the rate of photosynthesis?
A. The rate of photosynthesis increases with increa\sing light intensity.
B. The rate of photosynthesis decreases with increa\sing light intensity.
C. The rate of photosynthesis remains cons\tant with increa\sing light intensity.
D. The rate of photosynthesis is unaffected by light intensity.
Question 9
A bacterium has a generation time of 2 hours. If the population size is 10^6, what is the growth rate?
A. 0.5 h-1
B. 1.0 h-1
C. 2.0 h-1
D. 4.0 h-1
Question 10
The classification of living things based on their cell structure is called:
A. Binary Fission
B. Cell Division
C. Cell Wall
D. Cell Membrane
Question 11
In a photosynthetic reaction, which of the following is the primary electron acceptor?
A. P680
B. P700
C. Pheophytin
D. Plastocyanin
Question 12
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. To store water and nutrients
B. To synthesize proteins
C. To regulate the cell's pH
D. To provide structural support
Question 13
A patient has a fever of 38°C. If the normal body temperature is 37°C, what is the temperature difference?
A. 0.5°C
B. 1.0°C
C. 2.0°C
D. 5.0°C
Question 14
In the context of cell division, what is the primary function of the spindle fibers during mitosis?
A. Separation of chromosomes
B. Attachment of chromosomes to the spindle pole
C. Formation of the nuclear envelope
D. Condensation of chromatin
Question 15
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
B. 0.64
C. 0.72
D. 0.88

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