POST UTME NOUN 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of evolutionary theory, what is the primary mechanism by which species adapt to their environment?
A. Natural Selection
B. Genetic Drift
C. Mutation
D. Gene Flow
Question 2
What is the primary function of the mitochondria in the process of cellular respiration?
A. To generate ATP through the citric acid cycle
B. To produce NADH and FADH2 through the citric acid cycle
C. To produce ATP through the electron transport chain
D. To produce NADH and FADH2 through the electron transport chain
Question 3
In the process of osmoregulation, what is the primary mechanism by which the kidneys regulate the concentration of ions in the blood?
A. Active transport of ions across the renal tubular epithelium
B. Passive diffusion of ions through the renal tubular epithelium
C. Reabsorption of ions from the filtrate back into the bloodstream
D. Excretion of ions in the urine
Question 4
A diagram of the classification of living things is shown below. Which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Fungi
C. Plantae
D. Protista
Question 5
In the context of xylem transport, what is the primary function of the pit membrane?
A. To regulate water flow between adjacent tracheids
B. To facilitate the passage of solutes between adjacent tracheids
C. To prevent the collapse of tracheids
D. To maintain the structural integrity of the xylem
Question 6
What is the primary function of the pancreas in the process of digestion?
A. To produce digestive enzymes that break down proteins, carbohydrates, and fats
B. To produce hormones that regulate blood sugar levels
C. To produce bile that emulsifies fats
D. To produce mucus that lubricates the digestive tract
Question 7
What is the primary difference between a simple epithelium and a stratified epithelium?
A. Simple epithelium consists of a \single layer of cells, while stratified epithelium consists of multiple layers of cells
B. Simple epithelium consists of multiple layers of cells, while stratified epithelium consists of a \single layer of cells
C. Simple epithelium is found in the lining of the digestive tract, while stratified epithelium is found in the skin
D. Simple epithelium is found in the skin, while stratified epithelium is found in the lining of the digestive tract
Question 8
What is the process by which cells divide to produce two daughter cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Endoreduplication
Question 9
A 25-year-old woman presents with symptoms of hyperthyroidism. Which of the following hormones is most likely responsible for her condition?
A. Thyroid-stimulating hormone (TSH)
B. Triiodothyronine (T3)
C. Thyroxine (T4)
D. Adrenocorticotropic hormone (ACTH)
Question 10
The following diagram shows a simple e\cosystem. Identify the producer in the e\cosystem.
A. Grass
B. Fish
C. Bacteria
D. Fungi
Question 11
A 30-year-old man presents with symptoms of respiratory distress. His arterial blood gas (ABG) shows a pH of 7.35, PCO2 of 40 mmHg, and PO2 of 80 mmHg. What is the most likely diagnosis?
A. Asthma
B. Chronic obstructive pulmonary disease (COPD)
C. Pneumonia
D. Pulmonary embolism
Question 12
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 13
Which of the following tissues is primarily composed of epithelial cells?
A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue
Question 14
Asexual reproduction involves the production of offspring without the involvement of gametes. Which of the following is an example of asexual reproduction?
A. Binary fission in bacteria
B. Mitosis in animal cells
C. Meiosis in plant cells
D. Fertilization in animal cells
Question 15
A bio\logist is studying the concept of natural selection. Which of the following is an example of a trait that would be favored by natural selection?
A. Long neck in giraffes
B. Short legs in humans
C. Blue eyes in humans
D. Red hair in humans

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