POST UTME WELLSPRING UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A genetic cross between two pea plants results in a 3:1 ratio of tall plants to short plants. What is the genotype of the short plants?
A. Tt
B. tt
C. TT
D. Tt or tt
Question 2
A population of rabbits is growing exponentially. If the initial population size is 100 and the growth rate is 20% per year, what is the population size after 5 years?
A. 1000
B. 2000
C. 5000
D. 10000
Question 3
The diagram below shows the structure of a prokaryotic cell. Which of the following is the correct function of the cell wall?
A. Regulation of cell shape
B. Regulation of cell growth
C. Regulation of cell division
D. Regulation of cell size
Question 4
The diagram below shows the structure of a mitochondrion. Which of the following is the correct function of the cristae?
A. Regulation of electron transport
B. Production of ATP
C. Regulation of oxidative phosphorylation
D. Regulation of the electron transport chain
Question 5
The diagram below shows the structure of a eukaryotic cell. Which of the following is the correct function of the \endoplasmic reticulum?
A. Regulation of protein synthesis
B. Regulation of lipid synthesis
C. Regulation of carbohydrate synthesis
D. Regulation of nucleic acid synthesis
Question 6
The process by which plants convert light energy into chemical energy is known as:
A. Respiration
B. Photosynthesis
C. Transpiration
D. Osmosis
Question 7
The diagram below shows the structure of a prokaryotic cell. Which of the following is the correct function of the cell wall?
A. Regulation of cell shape
B. Regulation of cell growth
C. Regulation of cell division
D. Regulation of cell size
Question 8
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Nucleus
B. Mitochondria
C. Cell Wall
D. Chloroplast
Question 9
The hormone responsible for the regulation of blood sugar levels is:
A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroxine
Question 10
A diagram of a cell cycle is shown below. Which of the following stages is characterized by DNA replication?
A. G1
B. S
C. G2
D. M
Question 11
In a plant cell, the process of photosynthesis occurs in the chloroplasts. What is the name of the pigment responsible for absorbing light energy during this process?
A. Chlorophyll a
B. Chlorophyll b
C. Carotenoids
D. Phycobiliproteins
Question 12
A plant has a mutation in the gene that codes for the enzyme responsible for the first step in the Calvin cycle. Which of the following is a likely consequence of this mutation?
A. Increased CO2 fixation
B. Decreased CO2 fixation
C. No effect on CO2 fixation
D. Increased O2 production
Question 13
A population of rabbits is growing according to the \logistic growth model. If the carrying capacity is 1000 rabbits and the initial population is 100, what is the population size after 5 generations?
A. 500
B. 750
C. 900
D. 950
Question 14
A diagram of a plant cell is shown below. Which of the following organelles is responsible for protein synthesis?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Endoplasmic reticulum
Question 15
The process of cellular respiration in plants involves the breakdown of glu\cose to produce ATP, NADH, and FADH2. Which of the following is the correct sequence of events in the electron transport chain?
A. Complex I → Complex II → Complex III → Complex IV
B. Complex IV → Complex III → Complex II → Complex I
C. Complex II → Complex III → Complex IV → Complex I
D. Complex I → Complex III → Complex II → Complex IV

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