POST UTME CALEB UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a human digestive system is shown below. Which of the following structures is responsible for the breakdown of proteins into smaller peptides and amino acids?
A. Mouth
B. Esophagus
C. Stomach
D. Small intestine
Question 2
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. photosynthesis
B. respiration
C. transpiration
D. osmosis
Question 3
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 dominant allele 'A'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 4
A population of bacteria is growing exponentially. If the initial population is 100 and the population doubles every 2 hours, what is the population after 6 hours?
A. 1000
B. 2000
C. 4000
D. 8000
Question 5
A genetic cross between two true-breeding organisms results in a 3:1 ratio of offspring with a certain trait. What is the genotype of the parents?
A. BB x bb
B. Bb x Bb
C. BB x Bb
D. bb x bb
Question 6
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 7
The diagram below shows a cross-section of a plant stem. Identify the part labeled A.
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 8
A diagram of the human respiratory system is shown below. What is the primary function of the structure labeled 'B'?
A. The structure labeled 'B' is responsible for exchanging oxygen and carbon dioxide between the lungs and the bloodstream.
B. The structure labeled 'B' is responsible for filtering the air that enters the lungs.
C. The structure labeled 'B' is responsible for producing mucus to lubricate the airways.
D. The structure labeled 'B' is responsible for regulating the amount of air that enters the lungs.
Question 9
A researcher isolates a new species of bacteria that exhibits antibiotic resis\tance. Which of the following is a likely mechanism of resis\tance?
A. Efflux pumps
B. Enzymatic degradation
C. Target modification
D. Outer membrane modification
Question 10
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant vegetation. However, some primary consumers are known to be carnivorous, feeding on other primary consumers. Which of the following best describes the trophic level of these carnivorous primary consumers?
A. Secondary consumer
B. Tertiary consumer
C. Primary consumer
D. Decomposer
Question 11
In the context of cell division, what is the primary function of the centrioles during the prophase stage?
A. To form the spindle fibers
B. To replicate the DNA
C. To condense the chromatin
D. To form the nuclear envelope
Question 12
In the process of mitosis, what is the primary function of the metaphase?
A. Alignment of chromosomes at the metaphase plate
B. Separation of sister chromatids
C. Formation of the spindle apparatus
D. Condensation of chromatin
Question 13
In the xylem transport system, what is the primary function of the tracheids?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and other organic compounds from leaves to roots
C. Regulation of water potential in plants
D. Maintenance of turgor pressure in plant cells
Question 14
The process of cellular respiration involves the breakdown of glu\cose to produce energy in the form of ATP. This process occurs in the
A. Mitochondria
B. Nucleus
C. Ribosomes
D. Lysosomes
Question 15
The theory of evolution by natural selection was first proposed by
A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace

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