POST UTME MOUNTAIN TOP UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2-year-old child is brought to the hospital with symptoms of pneumonia. The child's white blood cell count is 20,000 cells per microliter. Which of the following is the most likely cause of the child's symptoms?
A. Bacterial pneumonia
B. Viral pneumonia
C. Fungal pneumonia
D. Parasitic pneumonia
Question 2
A researcher is studying the effect of a new antibiotic on a bacterial population. The researcher finds that the population grows exponentially at first, but then slows down and eventually reaches a plateau. What is the most likely explanation for this phenomenon?
A. The bacteria are adapting to the antibiotic
B. The antibiotic is not effective against the bacteria
C. The bacteria are dying off due to the antibiotic
D. The bacteria are growing in a new environment
Question 3
In the cell cycle, what is the stage where the cell prepares for division?
A. G1 phase
B. S phase
C. G2 phase
D. Mitosis
Question 4
In the context of eco\logical niches, what is the term for the process by which a species becomes specialized to occupy a particular environmental niche?
A. Niche partitioning
B. Niche differentiation
C. Niche overlap
D. Niche displacement
Question 5
In a human body, the nervous system is responsible for transmitting signals between the brain and the muscles. Which of the following is a type of nerve fiber?
A. Motor neuron
B. Sensory neuron
C. Association neuron
D. Commissural neuron
Question 6
A microorganism is isolated from a patient's blood sample. The microorganism is Gram-positive and has a characteristic 'chain of beads' appearance under the microscope. What is the likely identity of the microorganism?
A. Staphylococcus aureus
B. Streptococcus pneumoniae
C. Escherichia coli
D. Pseudomonas aeruginosa
Question 7
A population of rabbits is introduced to a new island. The population grows rapidly at first, but then levels off. What is the likely cause of this leveling off?
A. Predation by a native species
B. Limited food resources
C. Disease
D. Genetic drift
Question 8
The process of mitosis results in the production of what type of cells?
A. Somatic cells
B. Germ cells
C. Muscle cells
D. Nerve cells
Question 9
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the flower color, 20% are homozygous dominant, and 10% are homozygous recessive. What is the genotype of the individual that is homozygous recessive?
A. RR
B. Rr
C. rr
D. RR
Question 10
The xylem is responsible for transporting what subs\tance from the roots to the leaves?
A. Water
B. Minerals
C. Sugars
D. Proteins
Question 11
A diagram of the human excretory system is shown below. What is the primary function of the kidneys?
A. To filter waste products from the blood
B. To regulate body temperature
C. To produce hormones that stimulate growth
D. To produce urine
Question 12
In asexual reproduction, which of the following organisms can reproduce without the involvement of gametes?
A. Bacteria
B. Fungi
C. Plants
D. Animals
Question 13
A 50 mL sample of a solution containing 0.5 M NaCl is added to a 100 mL sample of a solution containing 0.2 M NaOH. What is the concentration of the resulting solution?
A. 0.25 M
B. 0.5 M
C. 0.75 M
D. 1 M
Question 14
A diagram shows a simple harmonic motion. What is the likely type of motion?
A. Simple harmonic motion
B. Damped harmonic motion
C. Forced harmonic motion
D. Oscillatory motion
Question 15
The theory of evolution by natural selection was first proposed by?
A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace

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