POST UTME UNILAG 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A patient with a rare genetic disorder has a mutation in the gene encoding the \alpha-globin subunit of hemoglobin. Which of the following is a likely consequence of this mutation?
A. Increased oxygen delivery to tissues
B. Reduced oxygen delivery to tissues
C. No change in oxygen delivery to tissues
D. Increased carbon dioxide production
Question 2
In a population of rabbits, the frequency of the gene for brown fur is 0.6, and the frequency of the gene for black fur is 0.4. What is the expected frequency of the heterozygous genotype (Bb) in the population?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 3
In the context of excretion and osmoregulation, what is the primary function of the kidneys in maintaining homeostasis?
A. Regulation of blood pH
B. Maintenance of blood pressure
C. Removal of waste products
D. Regulation of body temperature
Question 4
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. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 5
A diagram of the human circulatory system is shown below. Which part of the circulatory system is responsible for regulating blood pressure?
A. The heart
B. The lungs
C. The liver
D. The kidneys
Question 6
A diagram of the human reproductive system is shown below. Which part of the reproductive system is responsible for producing sperm?
A. The ovaries
B. The testes
C. The epididymis
D. The vas deferens
Question 7
In a human cell, the process of cellular respiration involves the breakdown of glu\cose to produce ATP. Which of the following is an example of a byproduct of cellular respiration?
A. Carbon dioxide
B. Water
C. ATP
D. Lactic acid
Question 8
The process by which the body regulates the amount of water in the body is known as
A. osmoregulation
B. excretion
C. absorption
D. transpiration
Question 9
In a desert e\cosystem, the process of osmoregulation is crucial for the survival of organisms. Which of the following is an example of a mechanism used by a desert-dwelling organism to regulate its body fluids?
A. Countercurrent heat exchange in the kidneys
B. Evaporation of water from the skin
C. Concentration of urine
D. Dilation of blood vessels
Question 10
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 recessive genotype 'aa'?
A. 0.16
B. 0.36
C. 0.64
D. 0.84
Question 11
In a random sample of 1000 individuals from a population, 250 have the genotype 'Bb'. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'B'?
A. 0.25
B. 0.3
C. 0.35
D. 0.4
Question 12
The process by which the body gets rid of waste products is known as
A. excretion
B. absorption
C. transpiration
D. respiration
Question 13
In the context of genetics, what is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Gene flow
D. Heritability
Question 14
A diagram of the human reproductive system is shown below. Which part of the system is responsible for producing sperm?
A. Testes
B. Epididymis
C. Vas deferens
D. Prostate gland
Question 15
The process by which the body regulates the amount of water in the body is known as
A. osmoregulation
B. excretion
C. absorption
D. transpiration

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