POST UTME RHEMA UNIVERSITY 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a typical human kidney, what percentage of the glomerular filtration rate (GFR) is reabsorbed back into the bloodstream?
A. 10%
B. 20%
C. 30%
D. 40%
Question 2
A population of Drosophila melanogaster is being studied for its adaptation to a changing environment. Which of the following evolutionary mechanisms is most likely responsible for the observed changes?
A. Natural selection
B. Genetic drift
C. Gene flow
D. Mutation
Question 3
In the context of photosynthesis, what is the primary function of the thylakoid membrane in the chloroplast?
A. To absorb light energy
B. To synthesize glu\cose
C. To transport electrons
D. To regulate stomatal opening
Question 4
The nervous system is responsible for transmitting signals between different parts of the body. Which of the following is a type of synapse?
A. D\endro-d\endritic synapse
B. Axo-d\endritic synapse
C. Axo-axonic synapse
D. Electrical synapse
Question 5
In a desert e\cosystem, what is the primary mechanism by which plants regulate water loss through their leaves?
A. Transpiration
B. Respiration
C. Photosynthesis
D. Evapotranspiration
Question 6
In a typical plant cell, the process of photosynthesis occurs in the following organelle:
A. Mitochondria
B. Chloroplast
C. Endoplasmic Reticulum
D. Lysosome
Question 7
A 50-year-old man has been experiencing frequent urination and nocturia. His doctor suspects that he has an overactive bladder. What is the primary mechanism by which the bladder muscle contracts to expel urine?
A. Muscarinic receptors
B. Adrenergic receptors
C. Cholinergic receptors
D. Beta-adrenergic receptors
Question 8
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for the synthesis of proteins?
A. Mitochondria
B. Nucleus
C. Ribosome
D. Endoplasmic reticulum
Question 9
The process of mitosis in a eukaryotic cell results in the production of:
A. 2 daughter cells with the same number of chromosomes as the parent cell
B. 4 daughter cells with half the number of chromosomes as the parent cell
C. 1 daughter cell with the same number of chromosomes as the parent cell
D. 4 daughter cells with the same number of chromosomes as the parent cell
Question 10
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 11
A diagram of a plant cell is shown below. What is the function of the cell wall?
A. Provides structural support
B. Regulates the movement of materials in and out of the cell
C. Produces proteins
D. Stores genetic information
Question 12
The sense organ responsible for detecting sound waves is the?
A. Ear
B. Eye
C. Nose
D. Tongue
Question 13
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 by-product of this process?
A. Oxygen
B. Carbon dioxide
C. Water
D. Nitrogen
Question 14
A 2-year-old child is brought to the doctor with a history of frequent infections. The child's mother reports that the child has been taking antibiotics for the past 6 months. What is the most likely cause of the child's condition?
A. Genetic mutation
B. Environmental factor
C. Imbalanced gut microbiome
D. Viral infection
Question 15
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

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