POST UTME AL-HIKMAH UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A patient is diagnosed with a blood disorder caused by a deficiency in hemoglobin. Which of the following organs is primarily responsible for the production of hemoglobin?
A. Liver
B. Spleen
C. Bone marrow
D. Kidneys
Question 2
The process by which plants convert light energy into chemical energy is known as
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 3
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of fluid balance
C. Response to stress and anxiety
D. Regulation of appetite
Question 4
In a eukaryotic cell, the process of cell division that results in the production of four daughter cells is known as
A. Mitosis
B. Meiosis
C. Binary Fission
D. Endoreduplication
Question 5
A population of rabbits has a birth rate of 0.05 and a death rate of 0.01. Assuming a cons\tant population size, what is the carrying capacity of the population?
A. 50
B. 100
C. 200
D. 500
Question 6
A 2.5-liter solution contains 1.8 liters of ethanol and 0.7 liters of water. What is the mole \fraction of ethanol in the solution?
A. 0.88
B. 0.92
C. 0.96
D. 0.98
Question 7
The process by which water moves through a plant, from the roots to the leaves, is known as
A. Transpiration
B. Translocation
C. Respiration
D. Photosynthesis
Question 8
Photosynthesis is the process by which plants convert light energy into chemical energy. Which of the following is a reac\tant in this process?
A. Carbon dioxide
B. Water
C. Glu\cose
D. Oxygen
Question 9
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. 0.16
B. 0.36
C. 0.64
D. 0.84
Question 10
A genetic trait is controlled by a \single gene with two alleles. The dominant allele is 'A' and the recessive allele is 'a'. What is the genotype of an individual that is homozygous dominant for the trait?
A. AA
B. Aa
C. aa
D. Ab
Question 11
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. Which of the following antibiotics is most effective against this bacterium?
A. Penicillin
B. Erythromycin
C. Vancomycin
D. Ciprofloxacin
Question 12
A 35-year-old female patient undergoes a liver transplant. Which of the following is the primary function of the Kupffer cells in the liver?
A. To filter the blood
B. To store glycogen
C. To synthesize bile
D. To remove bacteria and debris
Question 13
In the context of transport systems, what is the primary function of the xylem in plants?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Transport of waste products
D. Regulation of stomatal opening
Question 14
The diagram below shows the structure of a neuron. Which part of the neuron is responsible for transmitting signals to other neurons?
A. D\endrite
B. Axon
C. Cell Body
D. Myelin Sheath
Question 15
In a eukaryotic cell undergoing mitosis, what is the primary function of the centrioles during prophase?
A. To form the spindle fibers
B. To replicate the DNA
C. To condense the chromatin
D. To form the nuclear envelope

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