POST UTME COAL CITY UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of rabbits is growing according to the \logistic growth model. The carrying capacity of the population is 1000 rabbits. If the initial population size is 100 rabbits, what is the population size after 5 years?
A. 500 rabbits
B. 750 rabbits
C. 1000 rabbits
D. 1250 rabbits
Question 2
A population of rabbits is growing exponentially. If the population size is 100 at time t=0 and 200 at time t=1, what is the growth rate of the population?
A. 0.5
B. 1
C. 2
D. 5
Question 3
A bio\logist is studying the structure of a cell. Which of the following is a component of the \endoplasmic reticulum?
A. Mitochondria
B. Golgi apparatus
C. Endoplasmic reticulum
D. Lysosome
Question 4
In a eukaryotic cell, the \endoplasmic reticulum is involved in the synthesis of proteins that are destined for secretion or for use within the cell. Which of the following statements is true about the \endoplasmic reticulum?
A. The \endoplasmic reticulum is a type of organelle found in prokaryotic cells.
B. The \endoplasmic reticulum is involved in the synthesis of proteins that are destined for use within the cell.
C. The \endoplasmic reticulum is a type of organelle found in eukaryotic cells.
D. The \endoplasmic reticulum is involved in the synthesis of proteins that are destined for secretion.
Question 5
A bio\logist is studying the classification of living organisms. Which of the following is a characteristic of prokaryotic cells?
A. Presence of a true nucleus
B. Presence of mitochondria
C. Lack of a true nucleus
D. Presence of a cell wall
Question 6
In the context of eco\logy, what is the term for the process by which plants convert light energy into chemical energy?
A. Photosynthesis
B. Respiration
C. Decomposition
D. Fermentation
Question 7
A bio\logist is studying the structure of a cell. The cell has a nucleus, mitochondria, and a cell membrane. What is the function of the mitochondria?
A. protein synthesis
B. energy production
C. cellular respiration
D. cell division
Question 8
The process of mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell.
A. True
B. False
C. Mitosis results in four daughter cells
D. Mitosis results in two daughter cells that are genetically different from the parent cell
Question 9
The process of meiosis is a type of cell division that results in four daughter cells that are genetically different from the parent cell.
A. True
B. False
C. Meiosis results in two daughter cells
D. Meiosis results in four daughter cells that are genetically identical to the parent cell
Question 10
A researcher is studying the effects of antibiotics on bacterial growth. Which of the following is a characteristic of antibiotic resis\tance in bacteria?
A. The ability of bacteria to grow in the presence of antibiotics
B. The ability of bacteria to produce enzymes that break down antibiotics
C. The ability of bacteria to develop a resis\tance to antibiotics over time
D. The ability of bacteria to produce toxins that kill other bacteria
Question 11
In the context of excretion and osmoregulation, what is the primary function of the kidneys in maintaining acid-base balance?
A. To regulate the concentration of ions in the blood
B. To remove excess hydrogen ions from the body
C. To maintain the pH of the blood through the excretion of bicarbonate ions
D. To regulate the concentration of glu\cose in the blood
Question 12
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. 0.6
B. 0.4
C. 0.8
D. 0.2
Question 13
A geneticist is studying the inheri\tance of a trait in a family. The trait is determined by a \single gene with two alleles: 'A' and 'a'. The geneticist wants to determine the genotype of the offspring of a cross between two heterozygous parents. What is the probability that the offspring will be homozygous recessive?
A. 0.25
B. 0.50
C. 0.75
D. 0.90
Question 14
A cell is undergoing mitosis. Which of the following is a characteristic of the prophase stage?
A. The chromosomes are condensed and visible under a microscope
B. The nuclear envelope is broken down and the chromosomes are released
C. The chromosomes are duplicated and the cell is preparing for cytokinesis
D. The cell is in the process of interphase and the chromosomes are not visible
Question 15
A plant with a genotype of 'Tt' is crossed with a plant with a genotype of 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9

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