POST UTME SKYLINE UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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
C. No gene flow
D. No natural selection
Question 2
In the process of cellular respiration, what is the primary function of the electron transport chain?
A. To produce NADH and FADH2
B. To generate ATP molecules
C. To synthesize glu\cose
D. To break down proteins
Question 3
A person is diagnosed with a hormonal imbalance. Which of the following best describes the role of the pituitary gland in this condition?
A. To regulate hormone secretion
B. To regulate body temperature
C. To regulate hunger and thirst
D. To regulate sleep and wakefulness
Question 4
In a human nervous system, what is the primary function of the myelin sheath surrounding the axon of a neuron?
A. To transmit electrical signals along the axon
B. To provide structural support to the neuron
C. To regulate the release of neurotransmitters
D. To facilitate the repair of damaged neurons
Question 5
In the context of hormonal coordination, what is the primary function of the hypothalamus?
A. Regulation of body temperature
B. Regulation of hunger and thirst
C. Regulation of hormone secretion
D. Regulation of sleep and wakefulness
Question 6
In the context of sense organs, what is the primary function of the retina?
A. To detect light and color
B. To detect sound and vibrations
C. To detect touch and pressure
D. To detect taste and smell
Question 7
The xylem is a type of vascular tissue found in plants that is responsible for the transport of water and minerals from the roots to the leaves. What is the primary function of the xylem in plants?
A. To transport sugars and other organic compounds produced by photosynthesis.
B. To regulate the rate of water loss through transpiration.
C. To transport water and minerals from the roots to the leaves.
D. To store water and nutrients in the plant.
Question 8
In the classification of living things, what is the primary characteristic used to distinguish between prokaryotic and eukaryotic cells?
A. Presence of a cell wall
B. Presence of a true nucleus
C. Presence of mitochondria
D. Presence of chloroplasts
Question 9
In the process of photosynthesis, which of the following is the primary function of the thylakoid membrane?
A. Light-dep\endent reactions
B. Light-indep\endent reactions
C. Electron transport chain
D. ATP synthesis
Question 10
A cell is placed in a solution with a high concentration of glu\cose. Which of the following best describes the movement of water into the cell?
A. Osmosis
B. Diffusion
C. Active transport
D. Passive transport
Question 11
The human eye's retina contains specialized cells called rods and cones. What is the primary function of these cells?
A. To produce tears
B. To detect light and color
C. To regulate pupil size
D. To focus images
Question 12
A patient is diagnosed with a bacterial infection. Which of the following is a characteristic of the bacterial cell wall?
A. Presence of a peptidoglycan layer
B. Presence of a polysaccharide layer
C. Presence of a protein layer
D. Absence of a cell wall
Question 13
A diagram of a e\cosystem is shown below. Identify the biotic factor that is responsible for the decomposition of organic matter.
A. plant
B. animal
C. decomposer
D. microbe
Question 14
The hormone insulin plays a crucial role in regulating blood glu\cose levels. Which of the following is a direct effect of insulin on glu\cose metabolism?
A. Increased glu\cose uptake in muscles
B. Increased glu\cose release from liver
C. Increased gluconeogenesis
D. Increased glycogen synthesis
Question 15
The process of binary fission in bacteria involves the replication of the bacterial genome and the subsequent division of the cell into two daughter cells. What is the primary advantage of binary fission in bacteria?
A. It allows for rapid reproduction and colonization of new environments.
B. It enables the bacteria to adapt to changing environmental conditions.
C. It facilitates the exchange of genetic material between bacteria.
D. It increases the complexity of the bacterial cell structure.

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