POST UTME CRAWFORD UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The microorganism responsible for the disease 'Leprosy' is a type of bacteria that primarily affects the peripheral nerves and skin. What is the name of this microorganism?
A. Mycobacterium tuberculosis
B. Mycobacterium leprae
C. Staphylococcus aureus
D. Escherichia coli
Question 2
The nervous system's coordination of muscle contraction and relaxation is primarily mediated by the release of neurotransmitters from the motor neurons. Which of the following neurotransmitters is primarily responsible for the contraction of skeletal muscles?
A. Acetylcholine
B. GABA
C. Glutamate
D. Dopamine
Question 3
The process of mitosis results in the production of two daughter cells that are genetically identical to the parent cell. What is the primary purpose of the G2 phase in the cell cycle?
A. To repair DNA damage
B. To synthesize organelles
C. To prepare for cell division
D. To store genetic information
Question 4
A population of bacteria is growing exponentially. If the initial population is 100 and the growth rate is 20% per hour, what is the population after 3 hours?
A. 1600
B. 1800
C. 2000
D. 2200
Question 5
A population of bacteria is growing exponentially. If the initial population is 100 and the growth rate is 20% per hour, what is the population after 3 hours?
A. 324
B. 486
C. 648
D. 810
Question 6
A plant has a root system with a taproot and a fibrous root system. Which of the following is a characteristic of the taproot?
A. It is a \single, large root that grows downward.
B. It is a network of smaller roots that spread out in all directions.
C. It is a type of root that stores food.
D. It is a type of root that absorbs water and nutrients.
Question 7
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glu\cose. Which of the following is a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Water
D. Nitrogen
Question 8
In the human kidney, what is the primary function of the juxtaglomerular cells?
A. To regulate blood pressure
B. To produce renin
C. To filter waste products from the blood
D. To regulate electrolyte balance
Question 9
In a tropical rainforest e\cosystem, the primary consumers are typically insects, such as beetles and ants. Which of the following is a characteristic of these primary consumers?
A. They are large and carnivorous
B. They are small and herbivorous
C. They are social and live in colonies
D. They are solitary and live in trees
Question 10
In a typical xylem vessel, what is the primary function of the lignin?
A. To provide structural support to the vessel
B. To facilitate the transport of water and minerals
C. To regulate the rate of transpiration
D. To prevent the collapse of the vessel
Question 11
The cell membrane is selectively permeable, allowing certain subs\tances to pass through while restricting others. What is the primary function of the cell membrane in relation to the transport of subs\tances?
A. To regulate the movement of ions and molecules
B. To provide structural support to the cell
C. To synthesize proteins
D. To store genetic information
Question 12
The hormone responsible for promoting seed germination in plants is
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 13
A patient has a blood pressure of 140/90 mmHg. If the diastolic pressure is 90 mmHg, what is the systolic pressure?
A. 120
B. 130
C. 140
D. 150
Question 14
A plant with a mutation in the RBCS1 gene has a reduced ability to perform photosynthesis. Which of the following is a likely consequence of this mutation?
A. Increased stomatal density
B. Reduced chlorophyll content
C. Increased CO2 fixation
D. Decreased water loss
Question 15
The xylem is a type of vascular tissue found in plants that is responsible for the transport of water and minerals from the roots to the leaves. What is the primary function of the xylem in relation to the transport of subs\tances?
A. To transport water and minerals from the roots to the leaves
B. To synthesize proteins
C. To store genetic information
D. To provide structural support to the plant

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