POST UTME ELIZADE UNIVERSITY 2019 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 2019 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the
Correct A. anaphase-promoting complex
B. cyclin-dep\endent kinase
C. histone deacetylase
D. DNA polymerase

Correct Answer: A

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Question 2
The diagram below shows a cross-section of a plant root. Which of the following structures is responsible for the absorption of water and minerals from the soil?
Correct A. xylem
B. phloem
C. cortex
D. \endodermis

Correct Answer: A

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Question 3
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if five conditions are met. Which of the following is NOT one of these conditions?
A. large population size
B. no mutation
C. no gene flow
Correct D. random mating

Correct Answer: D

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Question 4
The diagram below shows a simplified representation of the cell cycle. Which of the following stages is characterized by the replication of the DNA?
A. G1
Correct B. S
C. G2
D. M

Correct Answer: B

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Question 5
The process of photosynthesis occurs in which of the following parts of a plant?
A. roots
B. stems
Correct C. leaves
D. flowers

Correct Answer: C

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Question 6
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. To produce xylem sap
Correct B. To store water and minerals
C. To transport xylem sap
D. To produce xylem fibers

Correct Answer: B

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Question 7
What is the process by which plants convert light energy into chemical energy?
A. Respiration
Correct B. Photosynthesis
C. Transpiration
D. Osmosis

Correct Answer: B

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Question 8
In the cell cycle, what is the stage where the cell prepares for cell division?
Correct A. G1 phase
B. G2 phase
C. S phase
D. M phase

Correct Answer: A

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Question 9
What is the term for the movement of water from the roots to the leaves through the xylem?
Correct A. Transpiration
B. Osmosis
C. Diffusion
D. Translocation

Correct Answer: A

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Question 10
What is the process by which an organism passes on its traits to its offspring?
Correct A. Inheri\tance
B. Mutation
C. Genetic drift
D. Gene flow

Correct Answer: A

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Question 11
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
Correct B. No mutation
C. No gene flow
D. No natural selection

Correct Answer: B

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Question 12
In a population of 1000 individuals, 70% have the dominant allele for brown eye color (B) and 30% have the recessive allele for blue eye color (b). What is the frequency of the B allele?
Correct A. 0.7
B. 0.3
C. 0.4
D. 0.6

Correct Answer: A

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Question 13
The nervous system is responsible for transmitting signals from the brain to the rest of the body. Which of the following is a type of neuron that is responsible for transmitting signals from sensory receptors to the spinal cord?
A. Motor neuron
Correct B. Sensory neuron
C. Interneuron
D. Association neuron

Correct Answer: B

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Question 14
The process of photosynthesis occurs in the chloroplasts of plant cells. Which of the following is a byproduct of photosynthesis?
Correct A. Oxygen
B. Carbon dioxide
C. Water
D. Glu\cose

Correct Answer: A

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Question 15
The process of mitosis results in the production of daughter cells that are genetically identical to the parent cell. Which of the following is a stage of mitosis where the chromosomes are condensed and attached to the spindle fibers?
A. Prophase
Correct B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: B

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Question 16
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'?
Correct A. 0.64
B. 0.36
C. 0.16
D. 0.04

Correct Answer: A

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Question 17
A researcher is studying the effect of pH on the activity of the enzyme catalase in yeast cells. Which of the following would be the most appropriate method to measure the activity of catalase?
Correct A. Spectrophotometry
B. Titration
C. Chromatography
D. Microscopy

Correct Answer: A

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Question 18
A diagram of a plant cell is shown below. Identify the organelle labeled 'X'.
A. Mitochondria
B. Chloroplast
C. Vacuole
Correct D. Endoplasmic Reticulum

Correct Answer: D

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Question 19
A researcher is studying the effect of temperature on the growth rate of E. coli bacteria. Which of the following would be the most appropriate method to measure the growth rate?
Correct A. Spectrophotometry
B. Titration
C. Chromatography
D. Microscopy

Correct Answer: A

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Question 20
A diagram of a human eye is shown below. Identify the part labeled 'Y'.
A. Cornea
B. Iris
C. Pupil
Correct D. Retina

Correct Answer: D

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Question 21
A researcher is studying the effect of light on the growth of radish plants. Which of the following would be the most appropriate method to measure the growth of the plants?
A. Spectrophotometry
B. Titration
C. Chromatography
Correct D. Microscopy

Correct Answer: D

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Question 22
A diagram of a neuron is shown below. Identify the part labeled 'Z'.
A. D\endrite
B. Cell Body
C. Axon
Correct D. Terminal Button

Correct Answer: D

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Question 23
A researcher is studying the effect of temperature on the growth rate of E. coli bacteria. Which of the following would be the most appropriate method to measure the growth rate?
Correct A. Spectrophotometry
B. Titration
C. Chromatography
D. Microscopy

Correct Answer: A

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Question 24
The concept of ΔG in the context of evolutionary theory refers to the change in the mean fitness of a population over time. What is the primary reason for the increase in ΔG in a population undergoing natural selection?
A. Genetic drift
B. Mutation
Correct C. Genetic variation
D. Gene flow

Correct Answer: C

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Question 25
The process of osmoregulation in animals involves the regulation of water and ion balance. Which of the following is a key mechanism used by the kidneys to regulate water balance?
A. Reabsorption of glu\cose and amino acids
B. Excretion of excess ions
Correct C. Production of antidiuretic hormone (ADH)
D. Regulation of blood pressure

Correct Answer: C

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