POST UTME ELIZADE UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell is able to transport glu\cose across the cell membrane at a rate of 10^-6 M/s, what is the concentration of glu\cose in the solution after 1000 s?
A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.15 M
Question 2
A cell is placed in a solution with a pH of 4. What is the concentration of hydrogen ions in the solution?
A. 1 x 10^\( -4 \) M
B. 1 x 10^\( -3 \) M
C. 1 x 10^\( -2 \) M
D. 1 x 10^\( -5 \) M
Question 3
The sense organ responsible for detecting changes in sound waves is the?
A. Eye
B. Ear
C. Nose
D. Tongue
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 5
A diagram shows a plant with a root system and a stem. What is the function of the root system?
A. absorbing water and nutrients
B. producing glu\cose through photosynthesis
C. supporting the plant's structure
D. relea\sing oxygen into the air
Question 6
Which of the following is an example of a heterotrophic organism?
A. Chlorophyll
B. Bacteria
C. Fungi
D. Algae
Question 7
In a cell, the process of mitosis is responsible for the production of?
A. Proteins
B. Carbohydrates
C. DNA
D. Two daughter cells
Question 8
The diagram below shows a cross-section of the human eye. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 9
The process of cellular respiration involves the breakdown of glu\cose to produce?
A. ATP and NADH
B. Glu\cose and Oxygen
C. Carbon dioxide and Water
D. Proteins and Carbohydrates
Question 10
A diagram of the human kidney is shown below. What is the function of the part labeled 'B'?
A. To filter waste from the blood
B. To regulate blood pressure
C. To produce urine
D. To store waste
Question 11
In the context of xylem transport, what is the primary function of the pit membrane?
A. To regulate water flow between adjacent tracheids
B. To facilitate the passage of solutes and water through the xylem
C. To prevent the collapse of tracheids during water stress
D. To maintain the structural integrity of the xylem tissue
Question 12
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.64
B. 0.36
C. 0.16
D. 0.84
Question 13
A patient is diagnosed with a hormone imbalance caused by a tumor in the pituitary gland. Which of the following hormones is most likely to be affected?
A. Adrenocorticotropic hormone (ACTH)
B. Thyroid-stimulating hormone (TSH)
C. Follicle-stimulating hormone (FSH)
D. Growth hormone (GH)
Question 14
In a typical terrestrial e\cosystem, what is the primary role of decomposers in the nutrient cycle?
A. To synthesize organic compounds from inorganic subs\tances
B. To break down dead organisms and recycle nutrients
C. To produce oxygen through photosynthesis
D. To absorb water and minerals from the soil
Question 15
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell is able to transport glu\cose across the cell membrane at a rate of 10^-6 M/s, how long will it take for the cell to reach a concentration of 0.01 M glu\cose?
A. 100 s
B. 1000 s
C. 10000 s
D. 100000 s

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