POST UTME ELIZADE UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A cell is placed in a solution with a pH of 4. What is the concentration of hydrogen ions in the solution?
A. 1 x 10^\( -4 \) M
B. 1 x 10^\( -3 \) M
C. 1 x 10^\( -2 \) M
D. 1 x 10^\( -5 \) M
Question 2
Which of the following is an example of a heterotrophic organism?
A. Chlorophyll
B. Bacteria
C. Fungi
D. Algae
Question 3
A population of 1000 individuals is growing at a rate of 10% per year. What is the population size after 5 years?
A. 1638
B. 1862
C. 2000
D. 2200
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?
A. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 5
A researcher is studying the effect of temperature on the growth of a microorganism. If the temperature is increased by 10°C, what is the expected growth rate of the microorganism?
A. 2.5 times
B. 5.0 times
C. 7.5 times
D. 10.0 times
Question 6
In the context of evolutionary bio\logy, what is the primary mechanism by which genetic drift influences the frequency of a particular allele in a population?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 7
A diagram of the human kidney is shown below. What is the function of the part labeled 'B'?
A. To filter waste from the blood
B. To regulate blood pressure
C. To produce urine
D. To store waste
Question 8
A diagram shows a human kidney with a nephron. What is the function of the nephron?
A. filtering waste and excess fluids
B. regulating blood pressure
C. producing urine
D. absorbing nutrients
Question 9
A bio\logist is studying the classification of living organisms. Which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Fungi
C. Plantae
D. Protista
Question 10
A researcher studying the effects of pollution on aquatic e\cosystems observes that the concentration of dissolved oxygen in the water decreases as the concentration of pollu\tants increases. What is the most likely explanation for this observation?
A. The increased concentration of pollu\tants leads to an increase in the rate of photosynthesis
B. The increased concentration of pollu\tants leads to a decrease in the rate of respiration
C. The increased concentration of pollu\tants leads to an increase in the rate of decomposition
D. The increased concentration of pollu\tants leads to a decrease in the rate of nutrient cycling
Question 11
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. pH has a positive effect on the growth of E. coli
B. pH has a negative effect on the growth of E. coli
C. pH has no effect on the growth of E. coli
D. The effect of pH on the growth of E. coli is dep\endent on the initial pH
Question 12
In a population of 1000 individuals, 70% are female. If 20% of the females are sterile, what is the expected number of fertile females?
A. 140
B. 280
C. 420
D. 560
Question 13
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell is able to transport glu\cose across the cell membrane at a rate of 10^-6 M/s, what is the concentration of glu\cose in the solution after 1000 s?
A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.15 M
Question 14
The process of cellular respiration involves the breakdown of glu\cose to produce?
A. ATP and NADH
B. Glu\cose and Oxygen
C. Carbon dioxide and Water
D. Proteins and Carbohydrates
Question 15
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'RR'?
A. 0.5
B. 0.25
C. 0.75
D. 0.33

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