POST UTME CALEB UNIVERSITY 2019 Biology | Objective

Are you preparing for POST UTME CALEB UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2019 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
Correct A. Storage of water and minerals
B. Transport of sugars and amino acids
C. Production of ethylene gas
D. Regulation of stomatal opening

Correct Answer: A

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Question 2
What is the primary difference between a prokaryotic cell and a eukaryotic cell?
Correct A. The presence of a true nucleus
B. The absence of a cell wall
C. The presence of mitochondria
D. The absence of ribosomes

Correct Answer: A

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Question 3
In the process of photosynthesis, what is the primary function of the thylakoid membranes?
Correct A. Production of ATP and NADPH
B. Production of glu\cose and oxygen
C. Regulation of stomatal opening
D. Storage of water and minerals

Correct Answer: A

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Question 4
What is the primary function of the Golgi apparatus in a eukaryotic cell?
Correct A. Production of proteins and lipids
B. Storage of water and minerals
C. Regulation of stomatal opening
D. Transport of sugars and amino acids

Correct Answer: A

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Question 5
In the process of cellular respiration, what is the primary function of the mitochondria?
Correct A. Production of ATP and NADPH
B. Production of glu\cose and oxygen
C. Regulation of stomatal opening
D. Storage of water and minerals

Correct Answer: A

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Question 6
In a photosynthetic pathway, which of the following is the primary function of the enzyme RuBisCO?
Correct A. Fixation of CO2
B. Reduction of CO2
C. Oxidation of CO2
D. Decarboxylation of CO2

Correct Answer: A

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Question 7
A patient is diagnosed with a bacterial infection. Which of the following antibiotics is most likely to be effective against this type of infection?
A. Penicillin
B. Erythromycin
Correct C. Ciprofloxacin
D. Vancomycin

Correct Answer: C

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Question 8
A researcher is studying the effects of climate change on a particular e\cosystem. Which of the following biomes is most likely to be affected by changes in temperature and precipitation?
A. Tropical Rainforest
Correct B. Temperate Grassland
C. Desert
D. Boreal Forest

Correct Answer: B

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Question 9
A patient is experiencing symptoms of a hormonal imbalance. Which of the following hormones is most likely to be involved in this condition?
A. Insulin
B. Growth Hormone
Correct C. Thyroid-Stimulating Hormone
D. Adrenaline

Correct Answer: C

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Question 10
A researcher is studying the excretory system of a particular organism. Which of the following organs is responsible for filtering waste products from the blood?
Correct A. Kidney
B. Liver
C. Pancreas
D. Spleen

Correct Answer: A

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Question 11
In a population of 1000 individuals, 70% are diploid, 20% are triploid, and 10% are tetraploid. If the average number of gametes produced by a diploid individual is 10^6, and the average number of gametes produced by a triploid individual is 10^5, what is the average number of gametes produced by the entire population?
A. 10^6
B. 10^5
Correct C. 2*10^5
D. 3*10^5

Correct Answer: C

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Question 12
A plant cell has a vacuole that contains 0.5 M sucrose. If the cell membrane is selectively permeable and allows the passage of water but not sucrose, what will happen to the cell?
Correct A. The cell will swell and eventually burst.
B. The cell will shrink and eventually die.
C. The cell will remain unchanged.
D. The cell will grow and divide.

Correct Answer: A

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Question 13
A 2.0 L flask contains 0.5 M NaCl. If 0.2 M KCl is added to the flask, what is the new concentration of NaCl?
A. 0.5 M
Correct B. 0.6 M
C. 0.7 M
D. 0.8 M

Correct Answer: B

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Question 14
A 50-year-old man has been experiencing symptoms of kidney failure for the past 5 years. His blood urea nitrogen (BUN) level is 60 mg/dL, and his serum creatinine level is 3.5 mg/dL. What is the most likely cause of his kidney failure?
A. Diabetes mellitus
B. Hypertension
Correct C. Chronic glomerulonephritis
D. Polycystic kidney disease

Correct Answer: C

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Question 15
A 30-year-old woman is experiencing symptoms of infertility. Her husband has a normal semen analysis, but she has a history of pelvic inflammatory disease (PID). What is the most likely cause of her infertility?
Correct A. Tubal damage from PID
B. Endometriosis
C. Polycystic ovary syndrome (PCOS)
D. Thyroid dysfunction

Correct Answer: A

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Question 16
In the context of evolutionary theory, what is the primary mechanism by which species adapt to their environment?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

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Question 17
A species of bird has a beak shape that is well-suited for cracking open nuts. However, a sudden change in climate causes the availability of nuts to decrease. What is likely to happen to the population of this bird species?
A. The population will increase due to the abundance of nuts
Correct B. The population will decrease due to the lack of food
C. The population will remain the same due to the bird's adaptability
D. The population will migrate to a new location

Correct Answer: B

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Question 18
A diagram of a plant cell is shown below. Identify the part labeled 'A'?
Correct A. Cell Wall
B. Nucleus
C. Mitochondria
D. Chloroplast

Correct Answer: A

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Question 19
A diagram of a human eye is shown below. Identify the part labeled 'B'?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 20
A diagram of a human brain is shown below. Identify the part labeled 'C'?
A. Cerebrum
B. Cerebellum
Correct C. Brainstem
D. Spinal Cord

Correct Answer: C

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Question 21
In the context of evolutionary theories, what is the primary mechanism driving the adaptation of populations to changing environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

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Question 22
A diagram of a human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 23
In a tropical rainforest e\cosystem, what is the primary role of decomposers in the nutrient cycle?
A. Primary Producers
B. Primary Consumers
Correct C. Decomposers
D. Omnivores

Correct Answer: C

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Question 24
A diagram of the human nervous system is shown below. Which part of the nervous system is responsible for transmitting signals from sensory receptors to the brain?
A. Cerebrum
B. Cerebellum
Correct C. Sensory Nerve
D. Motor Nerve

Correct Answer: C

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Question 25
In the context of respiration, what is the primary function of the alveoli in the lungs?
Correct A. Gas Exchange
B. Oxygen Storage
C. Carbon Dioxide Storage
D. Nitrogen Storage

Correct Answer: A

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