POST UTME AFE BABALOLA UNIVERSITY 2021 Biology | Objective

Are you preparing for POST UTME AFE BABALOLA UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the context of classification of living things, what is the primary function of the kingdom level?
Correct A. To group organisms based on their cell structure
B. To group organisms based on their body symmetry
C. To group organisms based on their mode of nutrition
D. To group organisms based on their genetic makeup

Correct Answer: A

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Question 2
A patient with a malfunctioning kidney is unable to excrete excess water. What is the likely effect on the patient's blood osmolality?
A. Increased osmolality
Correct B. Decreased osmolality
C. No change in osmolality
D. Variable osmolality

Correct Answer: B

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Question 3
A diagram of the human nervous system is shown below.
A. The brain is responsible for proces\sing sensory information
B. The spinal cord is responsible for transmitting nerve impulses
Correct C. The brain and spinal cord work together to control voluntary movements
D. The brain is responsible for controlling involuntary movements

Correct Answer: C

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Question 4
A diagram of the human eye is shown below.
A. The cornea is responsible for focu\sing light on the retina
B. The iris is responsible for controlling the amount of light entering the eye
Correct C. The cornea and iris work together to control the amount of light entering the eye
D. The cornea is responsible for controlling involuntary movements

Correct Answer: C

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Question 5
A diagram of the human genetic code is shown below.
A. The genetic code is responsible for storing genetic information
B. The genetic code is responsible for transmitting genetic information
Correct C. The genetic code and DNA work together to store and transmit genetic information
D. The genetic code is responsible for controlling involuntary movements

Correct Answer: C

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Question 6
In the context of the nervous system, what is the primary function of the axon hillock?
A. To transmit signals to the d\endrites
Correct B. To generate action potentials
C. To synthesize neurotransmitters
D. To regulate ion channels

Correct Answer: B

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Question 7
Which of the following types of muscle fibers is responsible for sustained, long-duration contractions?
Correct A. Type I
B. Type IIa
C. Type IIb
D. Type III

Correct Answer: A

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Question 8
In the context of the circulatory system, what is the primary function of the capillary bed?
A. To regulate blood pressure
Correct B. To exchange oxygen and carbon dioxide
C. To filter waste products
D. To store blood cells

Correct Answer: B

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Question 9
Which of the following types of classification is based on the presence or absence of a cell wall?
A. Binary classification
B. Ternary classification
C. Quaternary classification
Correct D. Cell wall-based classification

Correct Answer: D

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Question 10
In the context of the respiratory system, what is the primary function of the diaphragm?
A. To regulate air pressure
Correct B. To expand the thoracic cavity
C. To contract the lungs
D. To regulate breathing rate

Correct Answer: B

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Question 11
In a tropical rainforest, the primary consumers are primarily composed of which of the following groups?
Correct A. Herbivorous insects
B. Fruit-eating bats
C. Omnivorous birds
D. Carnivorous mammals

Correct Answer: A

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Question 12
The process of cellular respiration involves which of the following stages?
Correct A. Glycolysis, Pyruvate Oxidation, and the Citric Acid Cycle
B. The Electron Transport Chain, ATP Synthesis, and the Citric Acid Cycle
C. Glycolysis, the Electron Transport Chain, and ATP Synthesis
D. Pyruvate Oxidation, the Citric Acid Cycle, and ATP Synthesis

Correct Answer: A

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Question 13
The xylem in plants is responsible for transporting which of the following subs\tances?
Correct A. Water and minerals
B. Sugars and amino acids
C. Oxygen and carbon dioxide
D. Hormones and nutrients

Correct Answer: A

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Question 14
The theory of evolution by natural selection was first proposed by which of the following scientists?
Correct A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace

Correct Answer: A

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Question 15
The classification of living things is based on which of the following criteria?
A. Cell structure, DNA sequence, and metabolic pathways
B. Morpho\logy, anatomy, and embryonic development
Correct C. Phy\logenetic relationships, genetic diversity, and eco\logical niches
D. Molecular structure, chemical composition, and physical properties

Correct Answer: C

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Question 16
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells
B. It is composed of living cells
C. It is responsible for transporting sugars from the leaves to the roots
Correct D. It is responsible for transporting water and minerals from the roots to the leaves

Correct Answer: D

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Question 17
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
Correct A. Oxygen
B. Carbon dioxide
C. Water
D. Glu\cose

Correct Answer: A

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Question 18
The respiratory system in humans is responsible for exchanging gases between the body and the environment. Which of the following is a function of the lungs?
A. To regulate body temperature
B. To produce red blood cells
Correct C. To exchange gases between the body and the environment
D. To filter waste products from the blood

Correct Answer: C

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Question 19
The process of digestion in humans involves the breakdown of food into smaller molecules that can be absorbed and utilized by the body. Which of the following is a type of digestive enzyme?
A. Amylase
B. Lipase
C. Tryp\sin
Correct D. All of the above

Correct Answer: D

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Question 20
The theory of evolution by natural selection was first proposed by Charles Darwin in his book 'On the Origin of Species'. Which of the following is a key concept of this theory?
A. Survival of the fittest
B. Descent with modification
C. Gradualism
Correct D. All of the above

Correct Answer: D

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Question 21
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant vegetation. 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 22
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. Which of the following antibiotics is most likely to be effective against this infection?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
Correct D. Vancomycin

Correct Answer: D

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Question 23
In a xylem vessel, water is transported from the roots to the leaves through a process called
A. osmosis
B. active transport
C. diffusion
Correct D. transpiration pull

Correct Answer: D

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Question 24
A plant hormone that promotes cell elongation and cell division is
Correct A. auxin
B. gibberellin
C. cytokinin
D. ethylene

Correct Answer: A

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Question 25
The process by which the nervous system transmits signals from the brain to muscles is called
A. synaptic transmission
Correct B. neurotransmission
C. myelination
D. axon reflex

Correct Answer: B

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