POST UTME RSU 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant cell is placed in a solution containing 1M glu\cose. After 30 minutes, the cell's glu\cose concentration is measured to be 0.5M. What is the rate of glu\cose uptake by the cell?
A. 0.1M/min
B. 0.5M/min
C. 1M/min
D. 5M/min
Question 2
A diagram of a neuron is shown below. What is the function of the structure labeled 'A'?
A. To transmit signals to other neurons
B. To synthesize neurotransmitters
C. To store genetic information
D. To regulate cell growth
Question 3
In the context of evolutionary theory, what is the primary mechanism by which genetic drift acts to reduce genetic variation within a population?
A. Genetic recombination
B. Mutation
C. Gene flow
D. Genetic drift
Question 4
A 35-year-old man presents with a 1-year history of progressive shortness of breath and fatigue. His chest X-ray shows a large pleural effusion. What is the most likely diagnosis?
A. Pulmonary embolism
B. Lung cancer
C. Pneumonia
D. Cardiac failure
Question 5
A cell is placed in a medium with a high concentration of glu\cose. Which of the following is a possible outcome?
A. The cell will undergo apoptosis.
B. The cell will undergo mitosis.
C. The cell will become hypertrophic.
D. The cell will become hypotrophic.
Question 6
A patient is diagnosed with a kidney disease that requires the removal of excess potassium ions from the body. Which of the following organs is primarily responsible for potassium excretion?
A. Liver
B. Kidneys
C. Pancreas
D. Spleen
Question 7
In a typical terrestrial e\cosystem, which of the following biomes is characterized by a high level of rainfall and a dense network of tree roots?
A. Tropical Rainforest
B. Temperate Rainforest
C. Temperate Deciduous Forest
D. Boreal Forest
Question 8
A DNA molecule consists of two complementary strands. If one strand has the sequence 5'-ATCG-3', what is the sequence of the complementary strand?
A. 5'-TAGC-3'
B. 5'-TCGA-3'
C. 5'-GCTA-3'
D. 5'-AGCT-3'
Question 9
In the context of evolutionary theory, what is the primary mechanism by which natural selection acts on genetic variation?
A. Genetic drift
B. Mutation
C. Gene flow
D. Differential reproduction
Question 10
In a typical nerve impulse, the action potential is generated by the rapid depolarization of the neuron membrane, which is caused by the opening of voltage-gated sodium channels. What is the name of the process by which the sodium channels are inactivated after the action potential has passed?
A. Sodium-potassium pump
B. Sodium channel inactivation
C. Calcium channel activation
D. Potassium channel opening
Question 11
A diagram of a simple circuit is shown below. What is the current flowing through the circuit?
A. 2 A
B. 4 A
C. 6 A
D. 8 A
Question 12
In the context of genetics, what is the primary mechanism by which genetic variation is introduced into a population?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Question 13
A 2.5-liter solution of 0.5 M NaCl is prepared by dissolving 1.25 g of NaCl in water. What is the molarity of the solution after adding 1.0 liter of 1.0 M HCl?
A. 0.6 M
B. 0.8 M
C. 1.0 M
D. 1.2 M
Question 14
A plant grows in a pot with a mixture of soil and sand. If the plant grows 10 cm in 5 days, and the soil and sand mixture is 50% sand, what is the rate of growth of the plant in cm/day?
A. 2 cm/day
B. 4 cm/day
C. 6 cm/day
D. 8 cm/day
Question 15
A 30-year-old woman presents with a 2-year history of recurrent vaginal discharge and itching. Her husband has a history of urethritis. What is the most likely diagnosis?
A. Bacterial vaginosis
B. Trichomoniasis
C. Gonococcal vaginitis
D. Chlamydial vaginitis

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