POST UTME BABCOCK UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A patient is experiencing difficulty regulating their body temperature. Which of the following systems is responsible for thermoregulation?
A. Nervous system
B. Endocrine system
C. Circulatory system
D. Integumentary system
Question 2
In the context of evolutionary theory, what is the primary mechanism driving the adaptation of populations to changing environments?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 3
A cell is placed in a solution with a high concentration of a certain subs\tance. What would be the most likely effect on the cell?
A. The cell would swell and eventually burst
B. The cell would shrink and eventually die
C. The cell would remain unchanged
D. The cell would grow and divide
Question 4
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors. Which of the following is NOT one of the factors that can cause a change in allele frequency?
A. Mutation
B. Genetic drift
C. Gene flow
D. Natural selection
Question 5
A 5% solution of glu\cose in water has a density of 1.05 g/mL. If 10 mL of this solution contains 0.5 g of glu\cose, what is the molar concentration of glu\cose in the solution?
A. 0.05 M
B. 0.1 M
C. 0.2 M
D. 0.5 M
Question 6
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for protein synthesis?
A. Nucleus
B. Mitochondria
C. Ribosome
D. Lysosome
Question 7
In a typical terrestrial e\cosystem, what is the primary function of the root system in relation to the shoot system?
A. To absorb water and nutrients from the soil
B. To produce food through photosynthesis
C. To store water and nutrients for the plant
D. To regulate the plant's temperature
Question 8
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for protein synthesis?
A. Nucleus
B. Mitochondria
C. Ribosome
D. Lysosome
Question 9
In asexual reproduction, what is the primary mechanism by which genetic variation is introduced?
A. Mutation
B. Genetic recombination
C. Gene duplication
D. Gene deletion
Question 10
In a tropical rainforest e\cosystem, what is the primary role of the decomposer community?
A. To produce organic compounds through photosynthesis
B. To break down dead plant and animal matter into simpler subs\tances
C. To form symbiotic relationships with other organisms
D. To regulate the water cycle
Question 11
A species of bird is found in a specific region of the world. Which of the following classifications would be most appropriate for this species?
A. Kingdom Animalia
B. Phylum Chordata
C. Class Aves
D. Order Passeriformes
Question 12
In the context of excretion, what is the term for the process by which the kidneys filter waste products from the blood?
A. Glomerular filtration
B. Tubular reabsorption
C. Tubular secretion
D. Perfusion
Question 13
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors. Which of the following is a correct description of the Hardy-Weinberg principle?
A. The frequency of alleles in a population will change over time due to genetic drift.
B. The frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors.
C. The frequency of alleles in a population will increase over time due to natural selection.
D. The frequency of alleles in a population will decrease over time due to mutation.
Question 14
A plant cell has a high concentration of solutes in its cytoplasm. What is the primary mechanism by which the cell maintains water balance?
A. Osmosis
B. Active Transport
C. Passive Transport
D. Diffusion
Question 15
The diagram below shows the structure of a neuron. Which of the following is the function of the d\endrites?
A. To transmit signals to other neurons
B. To receive signals from other neurons
C. To synthesize neurotransmitters
D. To regulate the cell's metabolism

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: