POST UTME AFE BABALOLA UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of cell division, what is the primary function of the spindle fibers?
A. To separate chromosomes during anaphase
B. To align chromosomes during prophase
C. To form the nuclear envelope during telophase
D. To condense chromosomes during prophase
Question 2
A researcher is studying the effect of pH on the activity of the enzyme lactase. Which of the following best describes the relationship between pH and enzyme activity?
A. pH has no effect on enzyme activity
B. pH increases enzyme activity
C. pH decreases enzyme activity
D. pH has a biphasic effect on enzyme activity
Question 3
The type of tissue that connects and supports other tissues and organs in the body is
A. Connective Tissue
B. Epithelial Tissue
C. Muscle Tissue
D. Nervous Tissue
Question 4
The hormone responsible for the growth and development of plants is
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 5
The process of evolution by natural selection can be described by the following equation: \( Delta W = \frac{dW}{dt} \). What does this equation represent?
A. The rate of change of fitness with respect to time
B. The rate of change of population size with respect to time
C. The rate of change of genetic variation with respect to time
D. The rate of change of environmental conditions with respect to time
Question 6
The process by which plants transport water and minerals from the roots to the leaves is known as
A. Transpiration
B. Translocation
C. Osmosis
D. Diffusion
Question 7
A cell is placed in a medium with a pH of 7.4. If the cell has a membrane potential of -70 mV, what is the concentration of hydrogen ions outside the cell?
A. 10^{-7.4}
B. 10^{-70}
C. 10^{-7.4} \times 10^{-70}
D. 10^{-7.4} \div 10^{-70}
Question 8
The process of meiosis results in the production of four haploid cells from a diploid cell. Which of the following is a characteristic of the cells produced during meiosis?
A. They have the same number of chromosomes as the parent cell
B. They have half the number of chromosomes as the parent cell
C. They have the same number of chromosomes as the daughter cells in mitosis
D. They have more chromosomes than the parent cell
Question 9
A population of 1000 rabbits is introduced to a new island. The population grows at a rate of 20% per year. What is the population size after 5 years?
A. 1638
B. 2000
C. 2500
D. 3000
Question 10
A 2.5 L flask contains 2.0 g of CO2 at 25°C. If 1.0 g of O2 is added to the flask, what is the total pressure of the mixture?
A. 1.0 atm
B. 1.5 atm
C. 2.0 atm
D. 3.0 atm
Question 11
A kidney stone is formed in the kidney. What is the most likely cause of the stone?
A. excess calcium in the urine
B. excess oxalate in the urine
C. excess uric acid in the urine
D. excess sodium in the urine
Question 12
The following diagram represents a cross-section of a plant root. Identify the part labeled 'E' in the diagram.
A. Epidermis
B. Cortex
C. Endodermis
D. Stele
E. Xylem
Question 13
The following graph represents the growth of a population over time. What is the carrying capacity of the population?
A. 100
B. 200
C. 300
D. 400
Question 14
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20 μmol CO2 s-1
B. 40 μmol CO2 s-1
C. 60 μmol CO2 s-1
D. 80 μmol CO2 s-1
Question 15
The following diagram represents a cross-section of the human eye. Identify the part labeled 'D' in the diagram.
A. Cornea
B. Iris
C. Retina
D. Lens

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