POST UTME BSU 2017 Biology | Objective

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Question 1 View Details
In a typical animal cell, the \endoplasmic reticulum is involved in the synthesis of proteins and lipids. Which of the following statements is FALSE?
A. The \endoplasmic reticulum is a type of smooth membrane.
B. The \endoplasmic reticulum is involved in the synthesis of proteins and lipids.
C. The \endoplasmic reticulum is a type of rough membrane.
Correct D. The \endoplasmic reticulum is involved in the breakdown of proteins and lipids.

Correct Answer: D

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Question 2 View Details
A diagram of a plant cell is shown below. Which of the following structures is responsible for photosynthesis?
A. Vacuole
Correct B. Chloroplast
C. Mitochondrion
D. Nucleus

Correct Answer: B

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Question 3 View Details
In a typical animal cell, the Golgi apparatus is responsible for the modification and packaging of proteins for secretion. Which of the following statements is TRUE?
A. The Golgi apparatus is responsible for the breakdown of proteins.
Correct B. The Golgi apparatus is responsible for the modification and packaging of proteins for secretion.
C. The Golgi apparatus is responsible for the synthesis of proteins.
D. The Golgi apparatus is responsible for the transport of proteins to the mitochondria.

Correct Answer: B

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Question 4 View Details
A diagram of a human eye is shown below. Which of the following structures is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 5 View Details
In a typical animal cell, the lysosome is responsible for the breakdown of cellular waste and foreign subs\tances. Which of the following statements is FALSE?
A. The lysosome is responsible for the breakdown of cellular waste and foreign subs\tances.
Correct B. The lysosome is responsible for the synthesis of proteins.
C. The lysosome is responsible for the transport of proteins to the mitochondria.
D. The lysosome is responsible for the modification and packaging of proteins for secretion.

Correct Answer: B

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Question 6 View Details
A study on the epidemio\logy of malaria in a rural community revealed that the prevalence of the disease is highest among individuals who have a specific genotype that confers resis\tance to the parasite. Which of the following genetic principles best explains this observation?
A. Heterozygote advantage
B. Genetic drift
Correct C. Natural selection
D. Genetic variation

Correct Answer: C

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Question 7 View Details
A patient is diagnosed with a rare genetic disorder characterized by an inability to digest lactose, a sugar found in milk. Which of the following enzymes is deficient in this patient?
Correct A. Lactase
B. Amylase
C. Tryp\sin
D. Pep\sin

Correct Answer: A

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Question 8 View Details
A researcher is studying the effect of pH on the growth of a microorganism. The researcher observes that the microorganism grows best at a pH of 7.0. Which of the following terms best describes this relationship?
Correct A. Optimum pH
B. Maximum pH
C. Minimum pH
D. Critical pH

Correct Answer: A

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Question 9 View Details
A diagram of a plant cell is shown below. Which of the following organelles is responsible for photosynthesis?
A. Mitochondria
Correct B. Chloroplast
C. Nucleus
D. Vacuole

Correct Answer: B

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Question 10 View Details
A patient is diagnosed with a kidney disease that causes an imbalance of electrolytes in the body. Which of the following organs is responsible for regulating the balance of electrolytes in the body?
A. Liver
Correct B. Kidneys
C. Pancreas
D. Adrenal glands

Correct Answer: B

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Question 11 View Details
In the process of osmoregulation, what is the primary function of the kidneys in a hypertonic environment?
A. To excrete excess water
Correct B. To reabsorb excess ions
C. To regulate blood pH
D. To maintain electrolyte balance

Correct Answer: B

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Question 12 View Details
A plant cell is placed in a solution with a higher concentration of solutes than the cell's cytoplasm. What will happen to the cell?
Correct A. The cell will swell and eventually burst
B. The cell will shrink and lose water
C. The cell will remain unchanged
D. The cell will undergo mitosis

Correct Answer: A

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Question 13 View Details
In the human digestive system, what is the primary function of the pancreas?
A. To produce bile
Correct B. To produce digestive enzymes
C. To absorb nutrients
D. To regulate blood sugar levels

Correct Answer: B

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Question 14 View Details
A patient is diagnosed with a bacterial infection. Which of the following antibiotics is most likely to be effective against the infection?
A. Penicillin
B. Erythromycin
Correct C. Ciprofloxacin
D. Vancomycin

Correct Answer: C

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Question 15 View Details
A person is experiencing visual disturbances due to a problem with their sense organ. Which of the following is the most likely cause?
A. A problem with the cornea
Correct B. A problem with the retina
C. A problem with the optic nerve
D. A problem with the lens

Correct Answer: B

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Question 16 View Details
In the xylem, water and minerals are transported from the roots to the leaves through the process of
Correct A. Transpiration Pull
B. Root Pressure
C. Transpiration Push
D. Capillary Action

Correct Answer: A

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Question 17 View Details
The process by which cells divide to produce two daughter cells is known as
Correct A. Mitosis
B. Meiosis
C. Binary Fission
D. Endospore Formation

Correct Answer: A

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Question 18 View Details
The genetic material in eukaryotic cells is organized into
A. Mitochondria
Correct B. Chromatin
C. Ribosomes
D. Lysosomes

Correct Answer: B

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Question 19 View Details
The process by which an organism grows and develops from a \single cell is known as
A. Mitosis
B. Meiosis
C. Differentiation
Correct D. Embryogenesis

Correct Answer: D

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Question 20 View Details
The xylem is a type of
Correct A. Vascular Tissue
B. Ground Tissue
C. Dermal Tissue
D. Epidermal Tissue

Correct Answer: A

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Question 21 View Details
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'?
Correct A. 0.64
B. 0.36
C. 0.48
D. 0.52

Correct Answer: A

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Question 22 View Details
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
Correct A. 0.25
B. 0.5
C. 0.75
D. 0.9

Correct Answer: A

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Question 23 View Details
A cell is in the G2 phase of the cell cycle. What is the next phase of the cell cycle?
A. G1
B. S
C. G2
Correct D. M

Correct Answer: D

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Question 24 View Details
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size doubles every 2 hours, what is the population size after 6 hours?
A. 1600
B. 3200
Correct C. 6400
D. 12800

Correct Answer: C

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Question 25 View Details
A diagram shows a plant with a mutation in the 'w' gene. What is the effect of this mutation on the plant's phenotype?
Correct A. The plant will have white flowers.
B. The plant will have yellow flowers.
C. The plant will have red flowers.
D. The plant will have purple flowers.

Correct Answer: A

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