POST UTME EKSU 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 0.5 M solution of NaOH is mixed with a 0.5 M solution of HCl. What is the pH of the resulting solution?
A. 0
B. 1
C. 7
D. 14
Question 2
The process of photosynthesis in plants involves the conversion of which of the following subs\tances into glu\cose?
A. Carbon dioxide and water
B. Oxygen and water
C. Nitrogen and water
D. Sulfur and water
Question 3
In the context of asexual reproduction, what is the primary mechanism by which some organisms produce offspring?
A. Binary fission
B. Budding
C. Fragmentation
D. Parthenogenesis
Question 4
A 10 kg block is placed on a frictionless surface and a horizontal force of 20 N is applied to it. What is the acceleration of the block?
A. 0.2 m/s^2
B. 0.5 m/s^2
C. 1.0 m/s^2
D. 2.0 m/s^2
Question 5
The sense organ responsible for detecting changes in sound waves is the?
A. Eye
B. Ear
C. Nose
D. Mouth
Question 6
In the process of osmoregulation, what is the primary mechanism by which the kidneys regulate the concentration of ions in the blood?
A. Reabsorption of ions in the proximal convoluted tubule
B. Secretion of ions in the distal convoluted tubule
C. Excretion of ions in the collecting duct
D. Regulation of ion balance through the hypothalamus
Question 7
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 2, what is the new photosynthetic rate?
A. 5 μmol CO2 s-1
B. 10 μmol CO2 s-1
C. 20 μmol CO2 s-1
D. 40 μmol CO2 s-1
Question 8
The process of photosynthesis in plants involves the conversion of light energy into chemical energy in the form of glu\cose. Which of the following is a byproduct of this process?
A. Oxygen
B. Carbon dioxide
C. Water
D. Nitrogen
Question 9
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. 0.36
B. 0.64
C. 0.72
D. 0.88
Question 10
The process of mitosis in eukaryotic cells results in which of the following?
A. Two daughter cells with the same number of chromosomes
B. One daughter cell with the same number of chromosomes
C. Two daughter cells with a different number of chromosomes
D. No change in the number of chromosomes
Question 11
In the context of hormonal coordination, what is the primary function of the pituitary gland?
A. Regulation of growth and development
B. Control of hunger and thirst
C. Stimulation of reproductive hormones
D. Regulation of blood pressure
Question 12
A gene has two alleles, A and a, with frequencies 0.6 and 0.4, respectively. What is the probability that an individual will be homozygous dominant (AA) or homozygous recessive (aa)?
A. 0.36
B. 0.64
C. 0.24
D. 0.16
Question 13
A solution of 0.1 M NaCl is being used to study the transport of ions across a cell membrane. If the volume of the solution is increased by a factor of 10, what is the new concentration of NaCl?
A. 0.01 M
B. 0.1 M
C. 1 M
D. 10 M
Question 14
The xylem in plants is responsible for transporting which of the following subs\tances?
A. Water and minerals
B. Nutrients and sugars
C. Hormones and waste products
D. Oxygen and carbon dioxide
Question 15
The sense organ responsible for detecting changes in smell is the?
A. Eye
B. Ear
C. Nose
D. Mouth

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