POST UTME COAL CITY UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the following protein complex:
A. Anaphase-promoting complex (APC)
B. Prophase-promoting complex (PPC)
C. Mitotic spindle checkpoint (MSC)
D. Cyclin-dep\endent kinase (CDK)
Question 2
A 2.5-liter solution of 0.5 M NaCl is diluted to 5 liters. What is the new concentration of NaCl?
A. 0.2 M
B. 0.25 M
C. 0.3 M
D. 0.35 M
Question 3
Which of the following statements about the excretory system is false?
A. The kidneys filter waste products from the blood
B. The liver produces bile to aid in digestion
C. The skin helps to regulate body temperature
D. The lungs are responsible for removing waste products from the blood
Question 4
In a tropical rainforest, the nutrient cycle is primarily driven by the decomposition of organic matter by which of the following organisms?
A. Fungi
B. Bacteria
C. Protozoa
D. Rotifers
Question 5
A 30-year-old female patient has a history of recurrent kidney stones. The patient's 24-hour urine collection shows a high level of oxalate. What is the likely cause of this condition?
A. Hyperparathyroidism
B. Hypokalemia
C. Hyperoxaluria
D. Gastrointestinal malabsorption
Question 6
A patient is diagnosed with a bacterial infection. Which of the following antibiotics would be most effective against this type of infection?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
D. Vancomycin
Question 7
A diagram of the human circulatory system is shown below. What is the function of the heart?
A. Pumping blood to the lungs
B. Pumping blood to the brain
C. Pumping blood to the muscles
D. Pumping blood to the liver
Question 8
A species of fish has a genetic mutation that causes it to produce a bright coloration that is visible to a specific predator. What is the likely effect of this mutation on the fish's fitness?
A. The fish's fitness will decrease
B. The fish's fitness will increase
C. The fish's fitness will remain the same
D. The fish's fitness will be unaffected
Question 9
In the context of genetics, what is the primary function of the centromere in a eukaryotic chromosome?
A. To facilitate the separation of sister chromatids during mitosis
B. To ensure the accurate transmission of genetic information from one generation to the next
C. To regulate the expression of genes
D. To facilitate the repair of DNA damage
Question 10
A patient is experiencing difficulty seeing objects at a dis\tance. Which of the following sense organs is responsible for this type of vision?
A. Cornea
B. Iris
C. Lens
D. Retina
Question 11
In a population of 1000 individuals, 80% are heterozygous for the ABO blood group gene, 15% are homozygous dominant, and 5% are homozygous recessive. What is the genotype of the individual that is heterozygous for the ABO blood group gene?
A. IA
B. IA
C. ii
D. Ii
Question 12
A 5-liter solution of 0.2 M HCl is mixed with a 2.5-liter solution of 0.5 M NaOH. What is the pH of the resulting solution?
A. 1
B. 2
C. 3
D. 4
Question 13
A patient has a severe case of kidney failure. The patient's blood urea nitrogen (BUN) level is 50 mg/dL. What is the likely cause of this condition?
A. Dehydration
B. Diabetes
C. Hypertension
D. Kidney failure
Question 14
A species of bird has a beak shape that is adapted for cracking open nuts. However, a genetic mutation occurs that changes the shape of the beak to a more pointed shape. What is the likely effect of this mutation on the bird's ability to crack open nuts?
A. The bird's ability to crack open nuts will increase
B. The bird's ability to crack open nuts will decrease
C. The bird's ability to crack open nuts will remain the same
D. The bird's ability to crack open nuts will be unaffected
Question 15
The process of mitosis in plants results in the production of
A. Two daughter cells with the same number of chromosomes
B. Four daughter cells with the same number of chromosomes
C. Two daughter cells with a different number of chromosomes
D. Four daughter cells with a different number of chromosomes

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