POST UTME VERITAS UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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
B. 20,000 μm^2
C. 30,000 μm^2
D. 40,000 μm^2
Question 2
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. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 3
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?
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.
Question 4
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
D. 1.0
Question 5
The excretory system of an insect consists of a pair of
A. Kidneys
B. Lungs
C. Malpighian tubules
D. Intestines
Question 6
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%
B. 30%
C. 35%
D. 40%
Question 7
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?
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
Question 8
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?
A. Mutualism
B. Commensalism
C. Parasitism
D. Competition
Question 9
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?
A. 0.8
B. 1.0
C. 1.2
D. 1.5
Question 10
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
B. 0.5
C. 0.75
D. 1.0
Question 11
A diagram of a human kidney is shown below. What is the function of the structure labeled 'B'?
A. Filtering waste from the blood
B. Regulating blood pressure
C. Producing hormones
D. Storing waste
Question 12
The process by which the body maintains a stable internal environment despite changes in the external environment is known as
A. Homeostasis
B. Regulation
C. Adaptation
D. Acclimatization
Question 13
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?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 14
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. Photosynthesis
B. Cell signaling
C. Lipid modification and sorting
D. Cell division
Question 15
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
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

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