POST UTME VERITAS UNIVERSITY 2017 Biology | Objective

Are you preparing for POST UTME VERITAS UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Biology (Objective) questions designed to simulate the real exam environment.

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Question 1
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'?
Correct A. 0.36
B. 0.64
C. 0.72
D. 0.84

Correct Answer: A

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Question 2
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.15 m from its equilibrium position and released from rest. Assuming the block undergoes simple harmonic motion, what is its angular frequency?
A. 2.0 rad/s
Correct B. 4.0 rad/s
C. 6.0 rad/s
D. 8.0 rad/s

Correct Answer: B

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Question 3
A plant cell contains 100 μm^3 of cytoplasm and 50 μm^3 of vacuole. If the total volume of the cell is 200 μm^3, what is the percentage of the cell volume occupied by the cytoplasm?
A. 25%
Correct B. 30%
C. 35%
D. 40%

Correct Answer: B

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Question 4
In a typical human liver cell, the mitochondria are responsible for producing ATP through the process of cellular respiration. If the liver cell contains 1000 mitochondria, each with a surface area of 10 μm^2, what is the total surface area of the mitochondria?
A. 10,000 μm^2
Correct B. 20,000 μm^2
C. 30,000 μm^2
D. 40,000 μm^2

Correct Answer: B

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Question 5
A 0.5 M solution of NaCl is prepared by dissolving 10 g of NaCl in 100 mL of water. What is the molarity of the solution?
A. 0.1 M
Correct B. 0.2 M
C. 0.3 M
D. 0.4 M

Correct Answer: B

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Question 6
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
Correct C. Lipid modification and sorting
D. Cell division

Correct Answer: C

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Question 7
A researcher is studying the effect of pH on the activity of an enzyme. Which of the following statements is true?
A. The enzyme is most active at a pH of 7
B. The enzyme is most active at a pH of 9
Correct C. The enzyme is most active at a pH of 5
D. The enzyme is most active at a pH of 11

Correct Answer: C

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Question 8
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
Correct A. Photosynthesis
B. Cell signaling
C. Lipid modification and sorting
D. Cell division

Correct Answer: A

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Question 9
A researcher is studying the effect of temperature on the growth of a microorganism. Which of the following statements is true?
A. The microorganism grows fastest at a temperature of 20°C
Correct B. The microorganism grows fastest at a temperature of 30°C
C. The microorganism grows fastest at a temperature of 40°C
D. The microorganism grows fastest at a temperature of 50°C

Correct Answer: B

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Question 10
A diagram of a human kidney is shown below. What is the function of the structure labeled 'B'?
Correct A. Filtering waste from the blood
B. Regulating blood pressure
C. Producing hormones
D. Storing waste

Correct Answer: A

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Question 11
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the flower color, while 30% are homozygous recessive. If the frequency of the dominant allele is 0.8, what is the probability that a randomly selected individual will be homozygous dominant?
Correct A. 0.1
B. 0.2
C. 0.3
D. 0.4

Correct Answer: A

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Question 12
A researcher is studying the effect of pH on the growth of E. coli. The researcher measures the growth rate of E. coli at different pH levels and plots the data on a graph. If the growth rate is highest at pH 7 and lowest at pH 5, what can be concluded about the effect of pH on the growth of E. coli?
Correct A. The growth rate of E. coli is highest at pH 7 and lowest at pH 5.
B. The growth rate of E. coli is highest at pH 5 and lowest at pH 7.
C. The growth rate of E. coli is unaffected by pH.
D. The growth rate of E. coli is highest at pH 5 and lowest at pH 7, but only at high temperatures.

Correct Answer: A

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Question 13
A plant has a genotype of BBRR. If the plant is crossed with a plant having the genotype bbrr, what is the probability that the offspring will be homozygous dominant for the gene controlling the flower color?
A. 0.25
Correct B. 0.5
C. 0.75
D. 1.0

Correct Answer: B

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Question 14
A researcher is studying the effect of temperature on the growth of a microorganism. The researcher measures the growth rate of the microorganism at different temperatures and plots the data on a graph. If the growth rate is highest at 30°C and lowest at 20°C, what can be concluded about the effect of temperature on the growth of the microorganism?
Correct A. The growth rate of the microorganism is highest at 30°C and lowest at 20°C.
B. The growth rate of the microorganism is highest at 20°C and lowest at 30°C.
C. The growth rate of the microorganism is unaffected by temperature.
D. The growth rate of the microorganism is highest at 30°C and lowest at 20°C, but only at high pH levels.

Correct Answer: A

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Question 15
A plant has a genotype of bbRR. If the plant is crossed with a plant having the genotype Bbrr, what is the probability that the offspring will be homozygous recessive for the gene controlling the flower color?
A. 0.25
B. 0.5
C. 0.75
Correct D. 1.0

Correct Answer: D

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Question 16
In a population of 1000 individuals, the frequency of the dominant allele (A) is 0.6 and the frequency of the recessive allele (a) is 0.4. What is the expected frequency of the homozygous dominant genotype (AA)?
Correct A. 0.36
B. 0.48
C. 0.64
D. 0.72

Correct Answer: A

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Question 17
A plant cell has a cell wall, a large central vacuole, and a small nucleus. Which of the following is NOT a characteristic of plant cells?
A. Mitochondria
B. Chloroplasts
Correct C. Lysosomes
D. Peroxisomes

Correct Answer: C

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Question 18
The respiratory quotient (RQ) is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed during respiration. If the RQ is 0.8, what is the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed?
Correct A. 0.8
B. 1.0
C. 1.2
D. 1.5

Correct Answer: A

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Question 19
A 5% glu\cose solution is prepared by dissolving 5 grams of glu\cose in 95 grams of water. What is the concentration of the solution in g/100mL?
A. 4.5
B. 5.0
Correct C. 5.26
D. 6.0

Correct Answer: C

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Question 20
A plant grows in a pot with a mixture of soil and sand. The plant absorbs water and nutrients from the soil, but the sand does not contribute to the plant's growth. What is the function of the sand in the pot?
Correct A. To improve drainage
B. To increase the pH of the soil
C. To provide nutrients to the plant
D. To improve the texture of the soil

Correct Answer: A

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Question 21
In a tropical rainforest, the presence of a large number of epiphytes such as orchids and ferns is an example of which type of eco\logical relationship?
Correct A. Mutualism
B. Commensalism
C. Parasitism
D. Competition

Correct Answer: A

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Question 22
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Genetic drift
B. Natural selection
C. Mutation
Correct D. Heritability

Correct Answer: D

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Question 23
The excretory system of an insect consists of a pair of
A. Kidneys
B. Lungs
Correct C. Malpighian tubules
D. Intestines

Correct Answer: C

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Question 24
The process by which the body maintains a stable internal environment despite changes in the external environment is known as
Correct A. Homeostasis
B. Regulation
C. Adaptation
D. Acclimatization

Correct Answer: A

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Question 25
The tissue that connects muscles to bones is known as
A. Epithelial tissue
Correct B. Connective tissue
C. Muscle tissue
D. Nervous tissue

Correct Answer: B

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