POST UTME LASU 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a human brain is shown below. What is the function of the structure labeled 'D'?
A. Control of movement
B. Regulation of body temperature
C. Control of breathing
D. Regulation of body temperature and hunger
Question 2
A 20-year-old woman has a hemoglobin level of 8 g/dL. Which of the following would be a likely consequence of this condition?
A. Anemia
B. Thalassemia
C. Sickle cell disease
D. Polycythemia
Question 3
A cell is placed in a solution with a pH of 5.5. What is the concentration of hydrogen ions in the solution?
A. 10^{-4.5}
B. 10^{-5.5}
C. 10^{-6.5}
D. 10^{-7.5}
Question 4
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. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 5
A plant has a mutation in its chloroplast DNA that affects the synthesis of chlorophyll. Which of the following would be a likely consequence of this mutation?
A. Increased photosynthesis
B. Reduced photosynthesis
C. No effect on photosynthesis
D. Increased respiration
Question 6
A plant cell is shown below. What is the function of the structure labeled 'B'?
A. Storage of water and nutrients
B. Photosynthesis
C. Cell division
D. Cell growth
Question 7
In the context of tissue organization, what is the primary function of the basement membrane in epithelial tissues?
A. To provide structural support to the tissue
B. To regulate the movement of ions and molecules across the epithelial layer
C. To facilitate the exchange of oxygen and nutrients with the bloodstream
D. To act as a barrier against pathogens and toxins
Question 8
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
Question 9
The kidneys play a crucial role in the regulation of electrolyte balance in the body. Which of the following electrolytes is primarily excreted in the urine?
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
Question 10
The process of mitosis results in the production of daughter cells that are genetically identical to the parent cell. What is the primary function of the spindle fibers during mitosis?
A. To separate chromosomes
B. To align chromosomes
C. To package DNA
D. To regulate gene expression
Question 11
The classification of living organisms into kingdoms is based on the following characteristics. Which of the following is a key characteristic of the kingdom Animalia?
A. Multicellularity
B. Cell wall presence
C. Heterotrophy
D. Photosynthesis
Question 12
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. To store and transport water and minerals
B. To produce and store starch
C. To regulate the rate of water and mineral uptake
D. To facilitate the breakdown of complex organic molecules
Question 13
The process of gas exchange in the lungs involves the diffusion of oxygen and carbon dioxide across the alveolar-capillary membrane. Which of the following is a critical factor that affects the rate of gas exchange?
A. The surface area of the alveoli
B. The thickness of the alveolar-capillary membrane
C. The partial pressure of oxygen in the alveoli
D. The partial pressure of carbon dioxide in the blood
Question 14
A 50-year-old man has a blood pressure of 180/100 mmHg. Which of the following would be a likely consequence of this condition?
A. Cardiac hypertrophy
B. Cardiac failure
C. Renal failure
D. Stroke
Question 15
A 25-year-old female is experiencing severe abdominal pain and vomiting. Her blood pressure is low. Which of the following organs is most likely responsible for her symptoms?
A. Liver
B. Pancreas
C. Stomach
D. Small Intestine

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: