POST UTME ESUT 2023 Biology | Objective

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Question 1 View Details
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. What is the probability that a randomly selected individual will be homozygous recessive?
Correct A. 0.04
B. 0.2
C. 0.4
D. 0.6

Correct Answer: A

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Question 2 View Details
A diagram of a plant's vascular system is shown below. Which of the following structures is responsible for transporting water and minerals from the roots to the leaves?
A. Phloem
Correct B. Xylem
C. Cortex
D. Endodermis

Correct Answer: B

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Question 3 View Details
A 0.1 M solution of NaOH is mixed with a 0.2 M solution of HCl. What is the pH of the resulting solution?
A. 1
B. 2
C. 3
Correct D. 4

Correct Answer: D

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Question 4 View Details
A diagram of a cell is shown below. Which of the following organelles is responsible for protein synthesis?
A. Mitochondria
Correct B. Ribosome
C. Lysosome
D. Golgi apparatus

Correct Answer: B

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Question 5 View Details
A 2.5 g sample of a subs\tance is dissolved in 50 mL of water. What is the molarity of the resulting solution?
A. 0.1 M
B. 0.2 M
Correct C. 0.5 M
D. 1 M

Correct Answer: C

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Question 6 View Details
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
Correct A. To store water and minerals
B. To transport water and minerals
C. To regulate water and mineral uptake
D. To store starch and proteins

Correct Answer: A

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Question 7 View Details
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. Which of the following antibiotics is most effective against this bacterium?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
Correct D. Vancomycin

Correct Answer: D

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Question 8 View Details
A cell is in the G2 phase of the cell cycle. What is the primary function of the centrioles during this phase?
Correct A. To form the mitotic spindle
B. To separate the chromosomes
C. To regulate the cell cycle
D. To synthesize DNA

Correct Answer: A

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Question 9 View Details
A plant is undergoing asexual reproduction through vegetative propagation. What is the primary function of the apical meristem?
Correct A. To produce new roots and stems
B. To regulate cell growth and division
C. To synthesize chlorophyll
D. To store starch and proteins

Correct Answer: A

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Question 10 View Details
A genetic disorder is caused by a mutation in the BRCA1 gene. What is the primary function of the BRCA1 protein?
Correct A. To repair DNA damage
B. To regulate cell growth and division
C. To synthesize proteins
D. To store genetic information

Correct Answer: A

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Question 11 View Details
In a eukaryotic cell, the process of mitosis involves the separation of chromosomes during which stage?
A. Prophase
B. Metaphase
Correct C. Anaphase
D. Telophase

Correct Answer: C

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Question 12 View Details
The xylem in plants is responsible for transporting water and minerals from the roots to the leaves through the process of
A. Transpiration
B. Photosynthesis
Correct C. Translocation
D. Osmosis

Correct Answer: C

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Question 13 View Details
The process of evolution is driven by the variation in genetic traits among individuals in a population, which is influenced by
A. Genetic drift
B. Mutation
C. Gene flow
Correct D. Natural selection

Correct Answer: D

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Question 14 View Details
The tissue that makes up the majority of the human body is
Correct A. Connective tissue
B. Muscle tissue
C. Nervous tissue
D. Epithelial tissue

Correct Answer: A

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Question 15 View Details
The process of cellular respiration involves the breakdown of glu\cose to produce energy in the form of
Correct A. ATP
B. NADH
C. FADH2
D. Pyruvate

Correct Answer: A

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Question 16 View Details
In a diploid cell, what is the total number of chromosomes in the zygote?
A. 46
B. 92
C. 23
Correct D. 46

Correct Answer: D

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Question 17 View Details
What is the primary function of the Golgi apparatus in a cell?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis
Correct D. Protein modification

Correct Answer: D

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Question 18 View Details
What is the process by which plants convert light energy into chemical energy?
A. Respiration
Correct B. Photosynthesis
C. Decomposition
D. Fermentation

Correct Answer: B

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Question 19 View Details
What is the term for the movement of water from the roots to the leaves of a plant?
Correct A. Transpiration
B. Translocation
C. Osmosis
D. Diffusion

Correct Answer: A

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Question 20 View Details
What is 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
Correct D. Heritability

Correct Answer: D

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Question 21 View Details
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant plant life. However, some primary consumers are known to be carnivorous. Which of the following is a characteristic of these carnivorous primary consumers?
A. They have a shorter lifespan compared to herbivorous primary consumers.
Correct B. They have a higher metabolic rate than herbivorous primary consumers.
C. They have a more complex digestive system than herbivorous primary consumers.
D. They are larger in size than herbivorous primary consumers.

Correct Answer: B

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Question 22 View Details
A 25-year-old woman presents with symptoms of malabsorption, including diarrhea and weight loss. Her stool examination reveals the presence of a parasite. Which of the following parasites is most likely responsible for her symptoms?
Correct A. Giardia lamblia
B. Entamoeba histolytica
C. Ascaris lumbricoides
D. Trichuris trichiura

Correct Answer: A

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Question 23 View Details
A 35-year-old man is diagnosed with a type of cancer that originates from the epithelial cells lining the respiratory tract. Which of the following types of cancer is most likely responsible for his symptoms?
Correct A. Squamous cell carcinoma
B. Adenocarcinoma
C. Small cell carcinoma
D. Large cell carcinoma

Correct Answer: A

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Question 24 View Details
A 28-year-old woman is diagnosed with a condition characterized by the abnormal growth of cells in the connective tissue. Which of the following conditions is most likely responsible for her symptoms?
Correct A. Fibromatosis
B. Fibrosarcoma
C. Desmoid tumor
D. Osteosarcoma

Correct Answer: A

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Question 25 View Details
A 32-year-old man is diagnosed with a condition characterized by the abnormal growth of cells in the epithelial tissue. Which of the following conditions is most likely responsible for his symptoms?
A. Squamous cell carcinoma
Correct B. Adenocarcinoma
C. Small cell carcinoma
D. Large cell carcinoma

Correct Answer: B

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