POST UTME WELLSPRING UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 50g sample of glu\cose is digested by the enzyme amylase. If the reaction is 90% complete, how many grams of glu\cose remain?
A. 20g
B. 30g
C. 40g
D. 45g
Question 2
In the context of genetics, what is the primary function of the gene regulatory elements?
A. To regulate gene expression by binding to specific DNA sequences
B. To encode proteins that are involved in gene regulation
C. To catalyze chemical reactions that are involved in gene regulation
D. To transport molecules across cell membranes
Question 3
A diagram of the xylem and phloem in a plant stem is shown below. What is the function of the xylem in this diagram?
A. Transport of water and minerals from the roots to the leaves
B. Transport of sugars and other organic compounds from the leaves to the roots
C. Support and structural function in the stem
D. Storage of food and other subs\tances in the stem
Question 4
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. The patient's white blood cell count is 10,000 cells/μL. Which of the following is the most likely effect of the infection on the patient's immune system?
A. A decrease in white blood cell count
B. An increase in white blood cell count
C. No change in white blood cell count
D. A decrease in the patient's overall health
Question 5
A patient is experiencing symptoms of a neuro\logical disorder. The patient's doctor orders a blood test to measure the levels of a specific hormone in the blood. Which of the following hormones is most likely being measured?
A. Insulin
B. Growth hormone
C. Thyroid-stimulating hormone
D. Adrenaline
Question 6
A researcher is studying the effects of climate change on e\cosystems. Which of the following is a consequence of ri\sing global temperatures?
A. Increased biodiversity
B. Decreased greenhouse gas emissions
C. Polar ice cap melting
D. Increased ocean acidification
Question 7
A researcher is studying the effects of antibiotics on bacterial growth. Which of the following is a characteristic of antibiotic resis\tance?
A. The ability of bacteria to produce toxins
B. The ability of bacteria to form biofilms
C. The ability of bacteria to develop resis\tance to antibiotics
D. The ability of bacteria to undergo genetic recombination
Question 8
In the context of cell division, what is the primary function of the centrioles during the prophase stage?
A. To form the spindle fibers
B. To replicate the DNA
C. To organize the chromosomes
D. To regulate the cell cycle
Question 9
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size after 3 hours is 200, what is the growth rate of the population?
A. 10% per hour
B. 20% per hour
C. 30% per hour
D. 40% per hour
Question 10
A 2.0-m tall plant has a leaf area index of 4. If the plant is exposed to a light intensity of 200 μmol/m^2/s, what is the rate of photosynthesis?
A. 10 μmol CO2/s
B. 20 μmol CO2/s
C. 30 μmol CO2/s
D. 40 μmol CO2/s
Question 11
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. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 12
A population of Drosophila melanogaster is being studied for its genetic variation. Which of the following is an example of a genetic variation that can be observed in this population?
A. A change in the frequency of a particular allele
B. A change in the frequency of a particular trait
C. A change in the frequency of a particular gene
D. A change in the frequency of a particular species
Question 13
A researcher is studying the effects of a new medication on the cardiovascular system. The medication is designed to lower blood pressure by increa\sing the diameter of blood vessels. Which of the following is a likely effect of this medication on the blood pressure of a patient?
A. The patient's blood pressure will decrease
B. The patient's blood pressure will increase
C. The patient's blood pressure will remain the same
D. The patient's blood pressure will fluctuate
Question 14
A patient is diagnosed with a kidney stone. Which of the following is a common cause of kidney stones?
A. Excessive consumption of calcium-rich foods
B. Dehydration due to inadequate fluid intake
C. Genetic predisposition
D. Infection with a urinary tract pathogen
Question 15
A diagram of a simple harmonic motion is shown below. Identify the part labeled 'B'.
A. Amplitude
B. Frequency
C. Period
D. Phase angle

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