POST UTME AAUA 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of respiration, what is the primary function of the mitochondria?
A. To generate ATP through oxidative phosphorylation
B. To produce lactic acid through anaerobic respiration
C. To regulate the concentration of oxygen in the blood
D. To control the rate of breathing
Question 2
In the context of excretion and osmoregulation, what is the primary function of the kidneys?
A. To regulate the concentration of electrolytes in the blood
B. To remove waste products from the blood
C. To regulate the concentration of water in the blood
D. To produce hormones that regulate blood pressure
Question 3
A diagram of a chemical reaction is shown below. What is the product of the reaction?
A. H2O
B. CO2
C. CH4
D. NH3
Question 4
A 10 L solution contains 0.1 M glu\cose. What is the total number of moles of glu\cose in the solution?
A. 1
B. 1.25
C. 1.5
D. 1.75
Question 5
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 6
A plant cell has a vacuole that contains 0.5 M sucrose. If the volume of the vacuole is 100 mL, what is the total number of moles of sucrose in the vacuole?
A. 0.05
B. 0.1
C. 0.15
D. 0.2
Question 7
A 15 L solution contains 0.05 M NaCl. What is the total number of moles of NaCl in the solution?
A. 0.75
B. 0.875
C. 1
D. 1.125
Question 8
A plant cell has a mitochondrion that contains 0.3 M ATP. If the volume of the mitochondrion is 50 mL, what is the total number of moles of ATP in the mitochondrion?
A. 0.015
B. 0.03
C. 0.045
D. 0.06
Question 9
In the context of hormonal coordination, what is the primary function of the hypothalamus in regulating the pituitary gland?
A. To produce hormones that stimulate the pituitary gland
B. To inhibit the production of hormones by the pituitary gland
C. To regulate the secretion of hormones by the adrenal glands
D. To stimulate the release of hormones by the thyroid gland
Question 10
The genetic material that is responsible for the transmission of traits from one generation to the next is known as
A. DNA
B. RNA
C. Protein
D. Carbohydrate
Question 11
A plant cell undergoes mitosis. Which of the following is a characteristic of the daughter cells?
A. Increased ploidy
B. Decreased ploidy
C. Same ploidy
D. No change in ploidy
Question 12
In the context of evolutionary theory, what is the term for the process by which a species becomes better suited to its environment over time?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 13
The process by which the body removes waste products and excess subs\tances is known as
A. Excretion
B. Osmoregulation
C. Respiration
D. Photosynthesis
Question 14
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 180
B. 200
C. 220
D. 240
Question 15
The process by which plants convert light energy into chemical energy is known as
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis

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