POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The genetic variation in a population is increased by what type of mutation?
A. Point mutation
B. Frameshift mutation
C. Insertion mutation
D. Deletion mutation
Question 2
A plant cell is placed in a solution with a high concentration of sucrose. What will happen to the cell?
A. The cell will shrink due to water loss.
B. The cell will swell due to water uptake.
C. The cell will remain unchanged.
D. The cell will burst due to osmotic pressure.
Question 3
A researcher discovers a microorganism that exhibits a unique metabolic pathway. What is the most likely reason for this discovery?
A. Evolutionary adaptation
B. Genetic mutation
C. Environmental influence
D. Random chance
Question 4
In the process of respiration, what is the byproduct of the breakdown of glu\cose in the presence of oxygen?
A. Carbon dioxide and water
B. Glu\cose and oxygen
C. Carbon dioxide and oxygen
D. Water and oxygen
Question 5
In the context of reproduction, what is the term for the process by which an organism produces offspring without the involvement of gametes?
A. Asexual reproduction
B. Sexual reproduction
C. Binary fission
D. Mitosis
Question 6
A diagram of a human heart is shown below. Which of the following is a characteristic of the cardiac muscle?
A. It is striated
B. It is involuntary
C. It is composed of cardiac myocytes
D. It is composed of skeletal myocytes
Question 7
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. If a random sample of 50 individuals is taken from this population, what is the probability that the sample mean height is less than 165 cm?
A. 0.0056
B. 0.0102
C. 0.0148
D. 0.0194
Question 8
A researcher isolates a microorganism that exhibits both aerobic and anaerobic respiration. What is the most likely metabolic pathway this organism uses?
A. Citric acid cycle
B. Glycolysis
C. Electron transport chain
D. Both A and C
Question 9
A person is diagnosed with a vitamin B12 deficiency. Which of the following symptoms is most likely to occur?
A. Fatigue and weakness
B. Diarrhea and abdominal pain
C. Confusion and disorientation
D. Rapid heartbeat and palpitations
Question 10
A plant grows in a controlled environment with a cons\tant temperature and light intensity. What is the primary factor limiting its growth?
A. Water availability
B. Nutrient availability
C. Temperature
D. Light intensity
Question 11
The xylem is responsible for the transport of _______ in plants.
A. water, minerals
B. sugars, amino acids
C. oxygen, carbon dioxide
D. nitrogen, phosphorus
Question 12
A geneticist observes that a particular trait in a population is influenced by multiple genes. What type of inheri\tance pattern is this an example of?
A. Autosomal dominant
B. Autosomal recessive
C. X-linked dominant
D. Polygenic inheri\tance
Question 13
The hormone that regulates the growth and development of plants is?
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 14
The nervous system is responsible for _______ and _______ in the human body.
A. movement, sensation
B. sensation, movement
C. circulation, respiration
D. digestion, excretion
Question 15
The transport of subs\tances across the plasma membrane in plants occurs through what type of transport?
A. Symport
B. Antiport
C. Facilitated diffusion
D. Osmosis

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