POST UTME ABU 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The cell cycle is the process by which a cell grows, replicates its DNA, and divides into two daughter cells. Which of the following stages of the cell cycle is characterized by the replication of the cell's DNA?
A. G1 phase
B. S phase
C. G2 phase
D. M phase
Question 2
In the context of plant growth and development, what is the primary role of auxins?
A. To promote cell elongation
B. To promote cell division
C. To promote root growth
D. To promote stem growth
Question 3
The process of cellular respiration involves the breakdown of glu\cose to produce energy. Which of the following is a product of the citric acid cycle?
A. ATP
B. NADH
C. FADH2
D. All of the above
Question 4
Which of the following types of growth is characterized by an increase in cell size?
A. Meristematic growth
B. Intercalary growth
C. Diffusive growth
D. Isometric growth
Question 5
The genetic variation in a population is increased by?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 6
A neuron has a resting membrane potential of -70 mV. If the neuron is stimulated by an action potential, what is the approximate maximum depolarization of the membrane?
A. -50 mV
B. -60 mV
C. -70 mV
D. -80 mV
Question 7
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 8
In the human eye, what is the primary function of the retina?
A. To focus light onto the lens
B. To detect light and convert it into electrical signals
C. To regulate the amount of light entering the eye
D. To produce tears to lubricate the eye
Question 9
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20 μmol CO2 s-1
B. 40 μmol CO2 s-1
C. 80 μmol CO2 s-1
D. 160 μmol CO2 s-1
Question 10
A 20-year-old female presents with a 2-year history of recurrent episodes of fever, headache, and joint pain. Which of the following is the most likely diagnosis?
A. Rheumatoid arthritis
B. Lupus erythematosus
C. Fibromyalgia
D. Multiple sclerosis
Question 11
A 30-year-old female presents with a 1-year history of recurrent episodes of abdominal pain, diarrhea, and weight loss. Which of the following is the most likely diagnosis?
A. Irritable bowel syndrome (IBS)
B. Inflammatory bowel disease (IBD)
C. Gastroesophageal reflux disease (GERD)
D. Celiac disease
Question 12
The process of mitosis involves the replication of the cell's genetic material and the division of the cell into two daughter cells. Which of the following is a stage of mitosis?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 13
The process of cellular respiration involves the breakdown of glu\cose to produce ATP. Which of the following is a key intermediate in this process?
A. Pyruvate
B. Acetyl-CoA
C. Citrate
D. Oxaloacetate
Question 14
The process by which plants convert light energy into chemical energy is known as?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 15
The process of photosynthesis involves the conversion of light energy into chemical energy. Which of the following is a reac\tant in the light-dep\endent reactions of photosynthesis?
A. Water (H2O)
B. Carbon dioxide (CO2)
C. Light energy (hv)
D. Oxygen (O2)

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