POST UTME MADONNA UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of eco\logy, what is the term for the relationship between two species in which one species benefits and the other is harmed?
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
Question 2
In a typical cell, which of the following organelles is responsible for protein synthesis?
A. Mitochondria
B. Endoplasmic Reticulum
C. Ribosomes
D. Lysosomes
Question 3
In the context of growth and regulation, what is the primary function of the hypothalamus?
A. To regulate body temperature
B. To regulate hunger and thirst
C. To regulate sleep and wakefulness
D. To regulate all of the above
Question 4
In the context of eco\logy, what is the primary advantage of u\sing a food web to represent the relationships between species?
A. It allows for the visualization of complex relationships between species
B. It provides a quantitative measure of the energy flow through the e\cosystem
C. It identifies the keystone species in the e\cosystem
D. It predicts the long-term stability of the e\cosystem
Question 5
A plant has a genotype of bbss at the flower color locus. What is the probability that a seed produced by this plant will be homozygous recessive for flower color?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 6
In a typical e\cosystem, which of the following biotic factors is responsible for the decomposition of organic matter?
A. Producers
B. Consumers
C. Decomposers
D. Nutrient Cycles
Question 7
A cell is placed in a solution with a high concentration of glu\cose. Which of the following would be the most likely outcome?
A. The cell will undergo apoptosis
B. The cell will undergo mitosis
C. The cell will undergo \endocytosis
D. The cell will undergo osmosis
Question 8
In a photosynthetic pathway, which of the following is the primary function of the enzyme RuBisCO?
A. Fixation of CO2
B. Reduction of NADP+
C. Regeneration of RuBP
D. Oxidation of NADPH
Question 9
A 50-mL sample of a solution containing 0.1 M HCl is titrated with 0.1 M NaOH. What is the pH of the solution after the addition of 25 mL of NaOH?
A. 1
B. 2
C. 3
D. 4
Question 10
The human body is composed of various systems, including the circulatory, respiratory, and nervous systems. Which of the following is a function of the circulatory system?
A. Transportation of oxygen and nutrients to cells
B. Removal of waste products from the body
C. Regulation of body temperature
D. Production of hormones
Question 11
A population of bacteria is growing exponentially. If the initial population is 100 and the population doubles every 2 hours, what will be the population after 6 hours?
A. 1000
B. 2000
C. 4000
D. 8000
Question 12
In the context of eco\logy, what is the primary function of the producer in an e\cosystem?
A. To consume energy
B. To produce energy
C. To regulate body temperature
D. To filter waste products from the blood
Question 13
A researcher is studying the effect of temperature on the growth of yeast. The researcher measures the growth of the yeast at different temperatures and plots the data on a graph. Which of the following statements is true about the graph?
A. The graph shows a positive correlation between temperature and growth.
B. The graph shows a negative correlation between temperature and growth.
C. The graph shows no correlation between temperature and growth.
D. The graph shows a direct relationship between temperature and growth.
Question 14
In a human body, which of the following hormones is primarily responsible for regulating blood sugar levels?
A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroid Hormone
Question 15
A diagram of a plant cell is shown. Identify the organelle responsible for protein synthesis.
A. Nucleus
B. Ribosome
C. Mitochondria
D. Endoplasmic reticulum

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