POST UTME NOUN 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the classification of living things, which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Plantae
C. Fungi
D. Protista
Question 2
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. Storage of water and minerals
B. Transport of sugars and amino acids
C. Production of hormones and growth regulators
D. Maintenance of turgor pressure
Question 3
The diagram below shows the structure of a bacterial cell. Which of the following is the correct function of the cell wall?
A. To maintain the cell's shape
B. To regulate the movement of subs\tances in and out of the cell
C. To provide structural support to the cell
D. To synthesize proteins
Question 4
In the context of genetics, what is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Natural selection
D. Heritability
Question 5
A genetic cross between two organisms results in a 9:3:3:1 ratio of phenotypes. What type of inheri\tance is occurring?
A. Incomplete dominance
B. Codominance
C. Incomplete penetrance
D. Polygenic inheri\tance
Question 6
A patient is diagnosed with a bacterial infection. Which of the following is a characteristic of the bacterial cell wall?
A. Presence of a nuclear membrane
B. Presence of a cell wall composed of peptidoglycan
C. Presence of flagella for motility
D. Presence of a large amount of cytoplasm
Question 7
In the process of osmoregulation, what is the primary function of the kidneys in regulating electrolyte balance in the body?
A. To increase electrolyte reabsorption
B. To stimulate the release of aldosterone
C. To decrease electrolyte reabsorption
D. To increase urine production
Question 8
In the process of osmoregulation, what is the primary function of the kidneys in a desert-dwelling organism?
A. To conserve water by reabsorbing water from the filtrate
B. To excrete excess salt by producing a highly concentrated urine
C. To regulate electrolyte balance by adjusting the amount of ions in the urine
D. To produce a highly acidic urine to help eliminate excess hydrogen ions
Question 9
A 30-year-old female patient is diagnosed with a bacterial infection. Which of the following is a characteristic feature of this condition?
A. Presence of pus in the affected area
B. Inflammation of the affected tissue
C. Fever and chills
D. Rapid progression of the infection
Question 10
Which of the following organs is responsible for the exchange of oxygen and carbon dioxide in the human body?
A. Lungs
B. Heart
C. Liver
D. Kidneys
Question 11
A 10 kg block is attached to a horizontal spring with a force cons\tant of 100 N/m. If the block is displaced by 0.2 m from its equilibrium position and released, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 12
A patient is diagnosed with a disease caused by a virus. Which of the following is a characteristic of the viral replication cycle?
A. The virus enters the host cell through a process called \endocytosis
B. The virus replicates in the host cell through a process called transcription
C. The virus is released from the host cell through a process called lysis
D. The virus is released from the host cell through a process called budding
Question 13
The equation for the rate of diffusion of a gas across a membrane is given by Fick's law: \( J = -D \frac{dC}{dx} \). What is the unit of the diffusion coefficient (D) in this equation?
A. m^2/s
B. m/s
C. s^-1
D. m^3/s
Question 14
In the nervous system, which of the following types of neurons is responsible for transmitting signals from sensory receptors to the central nervous system?
A. Motor neurons
B. Sensory neurons
C. Interneurons
D. Association neurons
Question 15
A 40-year-old male patient presents with symptoms of chronic kidney disease. Which of the following is a characteristic feature of this condition?
A. Progressive loss of kidney function
B. Inflammation of the kidneys
C. Obstruction of the renal arteries
D. Destruction of the renal parenchyma

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