POST UTME MOUNTAIN TOP UNIVERSITY 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A researcher is studying the effect of pH on the growth of E. coli bacteria. The researcher measures the growth of the bacteria at different pH levels and plots the data on a graph. If the graph shows a sigmoidal curve, what type of relationship is being described?
A. Directly proportional
B. Inversely proportional
C. Sigmoidal
D. Exponential
Question 2
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. Chloroplast
C. Ribosome
D. Endoplasmic reticulum
Question 3
A diagram of a human eye is shown below. Identify the part labeled B.
A. Cornea
B. Iris
C. Lens
D. Retina
Question 4
The process by which plants convert light energy into chemical energy is known as?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 5
A genetic cross is performed between two true-breeding lines of plants. One line has red flowers and the other line has white flowers. What is the probability that the offspring will have pink flowers?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 6
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is mediated by the action of which of the following proteins?
A. Histone deacetylase
B. Conden\sin
C. Separase
D. Topoisomerase
Question 7
The type of connective tissue that provides support and structure to the body is?
A. Bone
B. Cartilage
C. Ligament
D. T\endon
Question 8
A 5.0-mL sample of a solution containing 0.2 M glu\cose is added to a 15.0-mL sample of a solution containing 0.1 M glu\cose. What is the resulting concentration of glu\cose in the mixture?
A. 0.05 M
B. 0.075 M
C. 0.1 M
D. 0.125 M
Question 9
In a tropical rainforest e\cosystem, what is the primary role of the emergent layer in maintaining the balance of the entire e\cosystem?
A. To provide shade and shelter for the understory plants
B. To intercept and absorb most of the sunlight, reducing the amount available to the understory plants
C. To act as a windbreak, protecting the understory plants from strong winds
D. To serve as a food source for the herbivores that live in the understory
Question 10
A plant cell has a cell wall. What is the primary function of the cell wall?
A. To provide structural support
B. To regulate the movement of materials
C. To synthesize proteins
D. To store genetic information
Question 11
A cell has a membrane potential of -70 mV. If the cell is stimulated to fire an action potential, what is the direction of the rapid depolarization phase?
A. The membrane potential becomes more negative
B. The membrane potential becomes less negative
C. The membrane potential remains the same
D. The membrane potential becomes more positive
Question 12
A 10-year-old boy has a blood pressure of 120/80 mmHg. What is the systolic pressure?
A. 120
B. 80
C. 100
D. 140
Question 13
The hormone responsible for the stimulation of appetite is?
A. Insulin
B. Glucagon
C. Ghrelin
D. Leptin
Question 14
The process of photosynthesis in plants involves the conversion of light energy into chemical energy, which is stored in the form of which of the following molecules?
A. ATP
B. NADPH
C. Glu\cose
D. Oxygen
Question 15
A plant has a genotype of Rr for the flower color gene, where R is the dominant allele for red flowers and r is the recessive allele for white flowers. What is the probability that the plant will produce a red flower?
A. 0.5
B. 0.75
C. 0.25
D. 0.33

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