POST UTME AFE BABALOLA UNIVERSITY 2022 Biology | Objective

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Question 1 View Details
In the context of cell division, what is the primary function of the spindle fibers during anaphase?
Correct A. Separation of sister chromatids
B. Formation of the mitotic spindle
C. Condensation of chromatin
D. Initiation of cytokinesis

Correct Answer: A

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Question 2 View Details
What is the primary mechanism by which the xylem transports water and minerals from the roots to the leaves?
Correct A. Transpiration pull
B. Root pressure
C. Capillary action
D. Osmosis

Correct Answer: A

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Question 3 View Details
In the context of respiration, what is the primary function of the mitochondria?
Correct A. Production of ATP
B. Breakdown of glu\cose
C. Regulation of cell growth
D. Transport of ions

Correct Answer: A

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Question 4 View Details
What is the primary function of the sense organ known as the vestibular apparatus?
A. Detection of sound
Correct B. Maintenance of balance
C. Regulation of body temperature
D. Production of tears

Correct Answer: B

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Question 5 View Details
In the context of sexual reproduction, what is the primary function of the gametes?
Correct A. Fusion to form a zygote
B. Development into a fetus
C. Regulation of hormone levels
D. Maintenance of body temperature

Correct Answer: A

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Question 6 View Details
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
Correct B. To group organisms based on their genetic makeup
C. To group organisms based on their body structure
D. To group organisms based on their mode of nutrition

Correct Answer: B

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Question 7 View Details
A plant cell is placed in a solution with a high concentration of sugar. What will happen to the cell?
A. The cell will shrink due to water loss
Correct B. The cell will swell due to water uptake
C. The cell will remain unchanged
D. The cell will burst due to osmotic pressure

Correct Answer: B

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Question 8 View Details
In the process of digestion, what is the primary function of the enzyme amylase?
A. To break down proteins into amino acids
Correct B. To break down carbohydrates into simple sugars
C. To break down fats into fatty acids
D. To break down nucleic acids into nucleotides

Correct Answer: B

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Question 9 View Details
A person has a high concentration of urea in their blood. What is the likely cause?
Correct A. Kidney failure
B. Liver failure
C. Diabetes
D. Heart failure

Correct Answer: A

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Question 10 View Details
In the context of transport systems, what is the primary function of the xylem?
Correct A. To transport water and minerals from the roots to the leaves
B. To transport oxygen and glu\cose from the leaves to the roots
C. To transport waste products from the cells to the bloodstream
D. To transport hormones from the \endocrine glands to the target cells

Correct Answer: A

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Question 11 View Details
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant plant life. Which of the following is a characteristic of these primary consumers?
A. They have a high metabolic rate
B. They have a low reproductive rate
C. They have a large body size
Correct D. They have a specialized digestive system

Correct Answer: D

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Question 12 View Details
In the classification of living organisms, the kingdom Monera is characterized by the absence of which of the following features?
A. Cell wall
Correct B. Chloroplasts
C. Flagella
D. Mitochondria

Correct Answer: B

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Question 13 View Details
In the xylem transport system, the tracheids are responsible for
Correct A. Transporting water and minerals from the roots to the leaves
B. Storing food and water in the plant
C. Supporting the plant structure
D. Regulating the plant's water potential

Correct Answer: A

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Question 14 View Details
In the process of meiosis, which of the following is a characteristic of the resulting gametes?
A. They have the same number of chromosomes as the parent cell
Correct B. They have half the number of chromosomes as the parent cell
C. They have a different number of chromosomes than the parent cell
D. They have no chromosomes

Correct Answer: B

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Question 15 View Details
In the human eye, the retina contains specialized photoreceptor cells called rods and cones. Which of the following is a characteristic of the rods?
A. They are sensitive to color
Correct B. They are sensitive to low light levels
C. They are responsible for peripheral vision
D. They are responsible for central vision

Correct Answer: B

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Question 16 View Details
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.2
B. 0.4
Correct C. 0.6
D. 0.8

Correct Answer: C

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Question 17 View Details
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
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 18 View Details
A diagram of the human digestive system is shown below. Identify the part labeled 'A'.
Correct A. Stomach
B. Small intestine
C. Large intestine
D. Liver

Correct Answer: A

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Question 19 View Details
A diagram of the human circulatory system is shown below. Identify the part labeled 'B'.
A. Heart
Correct B. Artery
C. Vein
D. Capillary

Correct Answer: B

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Question 20 View Details
A diagram of the human respiratory system is shown below. Identify the part labeled 'C'.
A. Lungs
B. Trachea
Correct C. Bronchi
D. Diaphragm

Correct Answer: C

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Question 21 View Details
A study on the evolution of antibiotic resis\tance in bacteria revealed that the rate of resis\tance development is influenced by the presence of certain environmental factors. Which of the following environmental factors is most likely to contribute to the development of antibiotic resis\tance?
A. Temperature
B. pH
C. Nutrient availability
Correct D. Presence of other microorganisms

Correct Answer: D

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Question 22 View Details
A population of Drosophila melanogaster is being studied for its genetic variation. Which of the following genetic variations is most likely to be influenced by the presence of a genetic modifier?
A. Eye color
B. Body size
C. Wing shape
Correct D. Sex determination

Correct Answer: D

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Question 23 View Details
A researcher is studying the effect of light intensity on the growth of a plant. Which of the following light intensities is most likely to result in the highest rate of photosynthesis?
A. Low light intensity
B. Moderate light intensity
Correct C. High light intensity
D. Very high light intensity

Correct Answer: C

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Question 24 View Details
A geneticist is studying the inheri\tance of a particular trait in a population of mice. Which of the following genetic patterns is most likely to result in the expression of the dominant allele?
Correct A. Autosomal dominant
B. Autosomal recessive
C. X-linked dominant
D. X-linked recessive

Correct Answer: A

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Question 25 View Details
A bio\logist is studying the structure of a cell membrane. Which of the following components is most likely to be involved in the transport of molecules across the membrane?
A. Phospholipid bilayer
Correct B. Protein channel
C. Glycoprotein
D. Cholesterol

Correct Answer: B

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