POST UTME PAN-ATLANTIC UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the process of excretion, what is the primary function of the kidneys in removing waste products from the blood?
A. To filter the blood u\sing the glomeruli
B. To regulate the concentration of ions in the blood
C. To produce antidiuretic hormone
D. To stimulate the release of aldosterone
Question 2
A researcher studying the eco\logy of a freshwater lake discovers that the lake's water level is decrea\sing at a rate of 0.5 meters per day. If the lake's water level is currently at 10 meters, how many days will it take for the water level to drop to 5 meters?
A. 10 days
B. 20 days
C. 30 days
D. 40 days
Question 3
In a population of 1000 individuals, 60% have the dominant allele for brown eye color (B) and 40% have the recessive allele (b). If two individuals with brown eye color are randomly selected for a study, what is the probability that they are both homozygous dominant (BB) for the brown eye color trait?
A. 0.36
B. 0.64
C. 0.36
D. 0.64
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'BB'?
A. 0.16
B. 0.32
C. 0.64
D. 0.8
Question 5
The process of respiration in plants involves the breakdown of
A. glu\cose and oxygen to produce carbon dioxide and water
B. carbon dioxide and water to produce glu\cose and oxygen
C. glu\cose and water to produce carbon dioxide and oxygen
D. carbon dioxide and oxygen to produce glu\cose and water
Question 6
A patient is diagnosed with a kidney disease that causes an imbalance of electrolytes in the body. Which of the following is a likely consequence of this disease?
A. Hypokalemia
B. Hyperkalemia
C. Hypocalcemia
D. Hypercalcemia
Question 7
A diagram of the human excretory system is shown below. Identify the part labeled 'B'.
A. Liver
B. Kidney
C. Pancreas
D. Spleen
Question 8
In asexual reproduction, what is the term for the process by which a cell divides to produce two daughter cells?
A. Mitosis
B. Meiosis
C. Binary Fission
D. Budding
Question 9
A 0.5 M solution of NaCl is prepared by dissolving 25 g of NaCl in 100 mL of water. What is the concentration of the solution in mol L-1?
A. 0.25 M
B. 0.5 M
C. 0.75 M
D. 1.0 M
Question 10
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, how many individuals are expected to be homozygous recessive?
A. 200
B. 400
C. 600
D. 800
Question 11
A couple is trying to conceive a child, but the woman has a history of recurrent miscarriages. Which of the following is a likely cause of this condition?
A. Thyroid Dysfunction
B. Polycystic Ovary Syndrome
C. Endometriosis
D. Antiphospholipid Syndrome
Question 12
A diagram of the water cycle is shown below. Which of the following processes is responsible for the formation of clouds?
A. Evaporation
B. Condensation
C. Precipitation
D. Runoff
Question 13
In the context of eco\logy, what is the term for the process by which plants convert light energy into chemical energy?
A. Photosynthesis
B. Respiration
C. Decomposition
D. Fermentation
Question 14
The process of excretion is crucial for the removal of waste products from the body. Which of the following is a key organ that plays a vital role in this process?
A. Kidney
B. Liver
C. Lung
D. Skin
Question 15
A 2.0 M solution of NaOH is mixed with a 2.0 M solution of HCl. What is the pH of the resulting solution?
A. 1
B. 7
C. 10
D. 14

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