POST UTME RSU 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of mitosis is essential for the growth and development of multicellular organisms. Which of the following is a key stage in the mitotic process?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 2
The process of mitosis in a eukaryotic cell is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the protein kinase Cdc28. What is the primary function of the Cdc28 protein in this context?
A. To phosphorylate and activate the cyclin-dep\endent kinase
B. To bind to and inhibit the anaphase-promoting complex
C. To regulate the expression of the histone genes
D. To control the synthesis of the microtubules
Question 3
A population of Drosophila melanogaster is being studied for its genetic variation. The frequency of the recessive allele 'a' is 0.2, and the frequency of the dominant allele 'A' is 0.8. What is the expected frequency of the genotype 'aa' in the next generation?
A. 0.16
B. 0.24
C. 0.32
D. 0.40
Question 4
The hormone insulin plays a crucial role in regulating blood sugar levels. Which of the following is a key effect of insulin on glu\cose metabolism?
A. Increased glu\cose production in the liver
B. Decreased glu\cose uptake in muscles
C. Increased glu\cose storage in adipose tissue
D. Decreased glu\cose release from glycogen stores
Question 5
A plant has a genotype of BBSS. What is the probability that a seed produced by this plant will be homozygous dominant for the trait?
A. 0%
B. 25%
C. 50%
D. 100%
Question 6
A diagram shows a simple circuit with a battery, a resistor, and a light bulb. If the battery has a voltage of 9V and the resistor has a resis\tance of 10Ω, what is the current flowing through the light bulb?
A. 0.9A
B. 0.1A
C. 1.0A
D. 9.0A
Question 7
A researcher is studying the effect of temperature on the growth rate of E. coli bacteria. The data collected are as follows: Temperature (°C), Growth Rate \( h-1 \): 20, 0.2; 25, 0.5; 30, 1.0; 35, 1.5. What is the best-fit linear equation for the data?
A. y = 0.05x + 0.1
B. y = 0.1x - 0.5
C. y = 0.05x - 0.1
D. y = 0.1x + 0.5
Question 8
In the context of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP
B. To produce NADH and FADH2
C. To transport electrons across the membrane
D. To synthesize glu\cose
Question 9
A researcher studying the effects of pollution on a particular species of fish observes that the fish have a 20% chance of being deformed. If 100 fish are collected, what is the expected number of deformed fish?
A. 10
B. 15
C. 20
D. 25
Question 10
A researcher studying the effects of climate change on a particular species of bird observes that the birds have a 15% chance of migrating to a new location. If 200 birds are studied, what is the expected number of birds that will migrate?
A. 20
B. 25
C. 30
D. 35
Question 11
A researcher is studying the effects of a new pesticide on a population of insects. The researcher observes that the pesticide is cau\sing the insects to become sterile. Which of the following is the most likely explanation for this phenomenon?
A. The pesticide is disrupting the insects' reproductive cycle
B. The pesticide is cau\sing the insects to become resis\tant to the pesticide
C. The pesticide is affecting the insects' nervous system
D. The pesticide is cau\sing the insects to become more aggressive
Question 12
In the context of evolutionary bio\logy, what is the primary mechanism driving the process of speciation?
A. Genetic drift
B. Natural selection
C. Gene flow
D. Mutation
Question 13
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is mediated by the action of the nuclear lamina. What is the primary function of the nuclear lamina in this process?
A. To provide structural support to the nucleus
B. To regulate the passage of molecules in and out of the nucleus
C. To facilitate the breakdown of the nuclear envelope
D. To control the replication of the genome
Question 14
A plant grows in a controlled environment with a cons\tant temperature of 25°C and a photoperiod of 12 hours. What is the expected effect on the plant's growth rate?
A. Increased growth rate
B. Decreased growth rate
C. No effect on growth rate
D. Variable growth rate
Question 15
A diagram of the human nervous system is shown below. What is the primary function of the cerebellum in this system?
A. To regulate the rate of muscle contraction
B. To control the rate of respiration
C. To facilitate the transmission of nerve impulses
D. To provide structural support to the brain

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