POST UTME ELIZADE UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of cellular respiration, what is the net ATP yield from the complete breakdown of one glu\cose molecule?
A. 36-38 ATP
B. 32-34 ATP
C. 28-30 ATP
D. 24-26 ATP
Question 2
The diagram below represents a cross-section of a human heart. Identify the structure labeled 'A' and describe its function.
A. The atrium is responsible for receiving blood from the veins and pumping it into the ventricles.
B. The ventricle is responsible for pumping blood from the heart to the rest of the body.
C. The valve is responsible for preventing backflow of blood from the ventricles to the atria.
D. The heart is responsible for regulating body temperature.
Question 3
In a photosynthetic pathway, light energy is absorbed by pigments such as chlorophyll a and carotenoids. Which of the following pigments has the highest energy absorption?
A. Chlorophyll a
B. Carotenoids
C. Phycobiliproteins
D. Bacteriochlorophyll
Question 4
In the process of mitosis, what is the primary function of the anaphase stage?
A. To condense the chromosomes
B. To separate the sister chromatids
C. To form the spindle fibers
D. To align the chromosomes at the metaphase plate
Question 5
The equation for the rate of gas exchange in plants is given by the following formula:
A. The rate of gas exchange is directly proportional to the difference in concentration between the surrounding air and the intercellular spaces.
B. The rate of gas exchange is inversely proportional to the concentration of CO2 in the surrounding air.
C. The rate of gas exchange is directly proportional to the temperature of the surrounding air.
D. The rate of gas exchange is inversely proportional to the humidity of the surrounding air.
Question 6
What is the term for the process by which cells divide and produce two daughter cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Endoreduplication
Question 7
In the context of evolutionary theory, what is the primary mechanism driving the adaptation of populations to changing environments?
A. Natural selection acting on genetic variation.
B. Genetic drift resulting from random events.
C. Gene flow from neighboring populations.
D. Mutation as a source of new genetic variation.
Question 8
In the context of evolutionary theory, what is the primary mechanism by which natural selection acts on genetic variation to produce adaptation?
A. Genetic drift
B. Gene flow
C. Mutation
D. Selection
Question 9
A cell is placed in a solution with a concentration of 0.1 M glu\cose. If the cell membrane is permeable to glu\cose, what is the direction of net glu\cose movement?
A. Into the cell
B. Out of the cell
C. No net movement
D. Dep\ends on the cell type
Question 10
What is the primary function of the Golgi apparatus in eukaryotic cells?
A. Protein synthesis
B. Cell signaling
C. Lipid modification
D. Protein transport
Question 11
In the process of osmoregulation, what is the primary function of the kidneys?
A. To regulate blood pressure
B. To filter waste products from the blood
C. To regulate electrolyte balance
D. To regulate pH levels
Question 12
The process of osmoregulation in plants involves the movement of water and ions across the plasma membrane. Which of the following statements is correct regarding the role of aquaporins in this process?
A. Aquaporins facilitate the movement of ions across the plasma membrane.
B. Aquaporins are responsible for the movement of water across the plasma membrane.
C. Aquaporins play a crucial role in the regulation of stomatal aperture.
D. Aquaporins are involved in the transport of nutrients across the plasma membrane.
Question 13
In the context of respiration and gas exchange, what is the primary function of the alveoli in the lungs?
A. To regulate the amount of oxygen in the blood through the release of carbon dioxide
B. To control the amount of carbon dioxide in the blood through the release of oxygen
C. To regulate the pH of the blood through the release of hydrogen ions
D. To control the amount of water in the blood through the release of antidiuretic hormone
Question 14
The type of genetic variation that occurs when a new mutation arises in a population is called
A. Genetic Drift
B. Mutation
C. Gene Flow
D. Natural Selection
Question 15
In the classification of living organisms, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
B. To group organisms based on their body structure
C. To group organisms based on their metabolic processes
D. To group organisms based on their evolutionary relationships

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