POST UTME UNIPORT 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 30-year-old female patient presents with symptoms of hypothyroidism. Her thyroid-stimulating hormone (TSH) level is elevated, and her free thyroxine (FT4) level is decreased. What is the primary function of the thyroid gland?
A. To regulate body temperature
B. To regulate metabolism
C. To regulate growth and development
D. To regulate electrolyte balance
Question 2
A 50-year-old male patient presents with symptoms of chronic obstructive pulmonary disease (COPD). His arterial blood gas (ABG) shows a pH of 7.35, PCO2 of 40 mmHg, and PO2 of 70 mmHg. What is the primary mechanism of gas exchange in the lungs?
A. Diffusion of oxygen from alveoli to blood
B. Diffusion of carbon dioxide from blood to alveoli
C. Active transport of oxygen from alveoli to blood
D. Active transport of carbon dioxide from blood to alveoli
Question 3
The process of photosynthesis occurs in the chloroplasts of plant cells. What is the primary function of the chloroplasts?
A. To synthesize chlorophyll
B. To break down glu\cose
C. To produce ATP
D. To transport water and minerals
Question 4
In a tropical rainforest, the primary consumers are primarily herbivores. Which of the following is a characteristic of these herbivores?
A. They have a large body size
B. They have a short digestive tract
C. They have a specialized digestive system
D. They have a high metabolic rate
Question 5
In the context of hormonal coordination, what is the primary function of the hypothalamus in regulating the pituitary gland?
A. To produce hormones that stimulate the pituitary gland
B. To inhibit the production of hormones by the pituitary gland
C. To regulate the secretion of hormones by the adrenal glands
D. To stimulate the release of hormones by the thyroid gland
Question 6
A diagram shows a plant with a long stem and large leaves. The plant is placed in a pot with a mixture of soil and sand. What is the most likely effect on the plant's growth?
A. Increased growth
B. Decreased growth
C. No effect
D. Stunted growth
Question 7
A researcher is studying the effect of pH on the growth of a microorganism. The researcher measures the growth rate of the microorganism at different pH levels and plots the data on a graph. What is the expected shape of the graph?
A. S-shaped curve
B. Linear
C. Exponential
D. Logarithmic
Question 8
A patient presents with symptoms of kidney disease. Laboratory tests reveal elevated levels of urea and creatinine in the blood. Which of the following is the most likely cause of the patient's symptoms?
A. Chronic kidney disease
B. Acute kidney injury
C. Nephrotic syndrome
D. Nephritic syndrome
Question 9
A diagram shows a simple circuit with a battery, a switch, and a light bulb. If the switch is turned off, what is the effect on the light bulb?
A. The light bulb glows brightly
B. The light bulb glows dimly
C. The light bulb does not glow
D. The light bulb explodes
Question 10
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 11
The process of mitosis involves the replication of DNA and the separation of chromosomes. Which of the following is a stage of mitosis?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 12
A species of animal has a respiratory system that involves the exchange of gases between the air and the blood. Which of the following is a likely consequence of this respiratory system?
A. Increased oxygen levels in the blood
B. Decreased oxygen levels in the blood
C. Increased carbon dioxide levels in the blood
D. Decreased carbon dioxide levels in the blood
Question 13
In a tropical rainforest e\cosystem, the primary producers are mostly plants and algae. What is the role of these organisms in the e\cosystem?
A. Primary consumers
B. Decomposers
C. Producers
D. Omnivores
Question 14
In a population of 1000 individuals, 70% are heterozygous for a particular gene. If 20% of the population are homozygous dominant, what is the frequency of the recessive allele?
A. 0.05
B. 0.10
C. 0.15
D. 0.20
Question 15
In the context of respiration, what is the primary function of the mitochondria?
A. To produce ATP
B. To break down glu\cose
C. To synthesize proteins
D. To transport oxygen

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