POST UTME ABU 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
Photosynthesis is the process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glu\cose. Which of the following is a byproduct of photosynthesis?
A. Oxygen gas
B. Carbon dioxide gas
C. Water vapor
D. Nitrogen gas
Question 2
A researcher is studying the effect of temperature on the growth of a microorganism. The researcher measures the growth of the microorganism at different temperatures and plots the data on a graph. Which of the following statements about the graph is true?
A. The graph shows a positive correlation between temperature and growth rate.
B. The graph shows a negative correlation between temperature and growth rate.
C. The graph shows no correlation between temperature and growth rate.
D. The graph shows a direct relationship between temperature and growth rate.
Question 3
The human circulatory system is responsible for transporting oxygen and nutrients to the body's cells and removing waste products. Which of the following is a characteristic of the xylem in plants?
A. It transports water and minerals from the roots to the leaves
B. It transports oxygen and nutrients from the roots to the leaves
C. It transports waste products from the leaves to the roots
D. It transports water and minerals from the leaves to the roots
Question 4
The enzyme responsible for the breakdown of starch in the human digestive system is:
A. Amylase
B. Lactase
C. Tryp\sin
D. Pep\sin
Question 5
The nervous system is responsible for transmitting signals from one part of the body to another. Which of the following is a type of neuron?
A. Motor neuron
B. Sensory neuron
C. Interneuron
D. Glia cell
Question 6
In the classification of living organisms, what is the term for the level of organization that includes organisms that are composed of multiple cells?
A. Domain
B. Kingdom
C. Phylum
D. Multicellular organism
Question 7
A researcher is studying the effect of temperature on the growth rate of a microorganism. Which of the following best describes the relationship between temperature and growth rate?
A. Temperature has a direct linear relationship with growth rate
B. Temperature has an inverse linear relationship with growth rate
C. Temperature has a quadratic relationship with growth rate
D. Temperature has no relationship with growth rate
Question 8
Asexual reproduction in plants can occur through the production of spores. Which of the following is a type of spore produced by plants?
A. Zygospore
B. Bacillus
C. Fruit
D. Seed
Question 9
A patient is diagnosed with a respiratory disease characterized by inflammation of the air sacs in the lungs. Which of the following is a common symptom of this disease?
A. Coughing up blood
B. Shortness of breath
C. Fatigue
D. Loss of appetite
Question 10
The process of osmoregulation in plants involves the movement of water across the plasma membrane, which is influenced by the concentration of solutes in the surrounding environment. What is the term for the movement of water from a region of high solute concentration to a region of low solute concentration?
A. Osmosis
B. Diffusion
C. Active transport
D. Passive transport
Question 11
A plant has a genotype of BBRR. What is the probability that a seed produced by this plant will be homozygous dominant for the B gene?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 12
A patient is diagnosed with a viral infection. Which of the following antiviral medications would be most effective against this type of infection?
A. Ribavirin
B. Oseltamivir
C. Acyclovir
D. Amantadine
Question 13
A microorganism is classified as a fungus. Which of the following characteristics is typical of this microorganism?
A. It is a prokaryote
B. It is a eukaryote
C. It is a photosynthetic organism
D. It is a heterotrophic organism
Question 14
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. What is the probability that two individuals chosen at random will both be homozygous recessive?
A. 0.04
B. 0.16
C. 0.36
D. 0.64
Question 15
A neuron has a resting potential of -70 mV and an action potential of +30 mV. If the membrane potential is initially at -60 mV, what is the magnitude of the depolarization required to reach the threshold for an action potential?
A. 10 mV
B. 20 mV
C. 30 mV
D. 40 mV

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