Practice post utme madonna university biology 2024 Past Questions

Question 1

In the context of evolutionary theory, what is the primary mechanism driving the process of speciation?

A. Genetic drift

Correct B. Natural selection

C. Gene flow

D. Mutation

Correct Answer: B

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Question 2

A diagram of the human respiratory system is shown below. Which of the following structures is responsible for the exchange of oxygen and carbon dioxide?

A. Trachea

Correct B. Lungs

C. Diaphragm

D. Bronchi

Correct Answer: B

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Question 3

In the context of hormonal coordination, what is the primary function of the hypothalamus?

A. Regulation of body temperature

B. Regulation of hunger and thirst

Correct C. Regulation of hormone secretion

D. Regulation of sleep and wakefulness

Correct Answer: C

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Question 4

A diagram of the excretory system is shown below. Which of the following structures is responsible for the filtration of blood?

Correct A. Kidneys

B. Nephrons

C. Ureters

D. Bladder

Correct Answer: A

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Question 5

In the context of reproductive bio\logy, what is the primary function of the placenta?

A. Production of hormones

Correct B. Exchange of oxygen and carbon dioxide

C. Production of antibodies

D. Regulation of fetal development

Correct Answer: B

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Question 6

The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?

A. Random mating

B. No mutation

Correct C. No gene flow

D. No natural selection

Correct Answer: C

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Question 7

In a eukaryotic cell, the process of mitosis involves the separation of chromosomes into two daughter cells. Which of the following stages of mitosis is characterized by the condensation of chromosomes?

Correct A. Prophase

B. Metaphase

C. Anaphase

D. Telophase

Correct Answer: A

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Question 8

The process of excretion in animals involves the removal of waste products from the body. Which of the following organs is responsible for the excretion of urea in humans?

Correct A. Kidneys

B. Liver

C. Pancreas

D. Spleen

Correct Answer: A

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Question 9

The nervous system is responsible for the transmission of nerve impulses. Which of the following types of neurons is responsible for the transmission of sensory information?

Correct A. Sensory neurons

B. Motor neurons

C. Interneurons

D. Glia cells

Correct Answer: A

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Question 10

The process of growth and development in animals involves the coordinated action of various hormones. Which of the following hormones is responsible for the promotion of growth and development in children?

Correct A. Growth hormone

B. Thyroid hormone

C. Adrenaline

D. Insulin

Correct Answer: A

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Question 11

In a study on the epidemio\logy of malaria, researchers found that the prevalence of the disease was higher in areas with poor sanitation and inadequate waste management. Which of the following best describes the relationship between sanitation and malaria prevalence?

A. Positive correlation

Correct B. Negative correlation

C. No correlation

D. Inverse correlation

Correct Answer: B

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Question 12

A patient is diagnosed with a rare genetic disorder that affects the production of a specific enzyme. Which of the following best describes the type of mutation that would result in this disorder?

Correct A. Point mutation

B. Frameshift mutation

C. Deletion mutation

D. Insertion mutation

Correct Answer: A

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Question 13

A researcher is studying the effect of light intensity on plant growth. Which of the following best describes the type of graph that would be used to represent the relationship between light intensity and plant growth?

A. Linear graph

Correct B. Exponential graph

C. Logarithmic graph

D. Inverse graph

Correct Answer: B

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Question 14

A patient is experiencing symptoms of a neuro\logical disorder. Which of the following best describes the type of coordination that would be affected in this disorder?

Correct A. Nervous coordination

B. Hormonal coordination

C. Muscular coordination

D. Skeletal coordination

Correct Answer: A

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Question 15

A researcher is studying the effect of pH on enzyme activity. Which of the following best describes the type of graph that would be used to represent the relationship between pH and enzyme activity?

A. Linear graph

B. Exponential graph

Correct C. Logarithmic graph

D. Inverse graph

Correct Answer: C

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Question 16

The process of meiosis in a diploid organism results in the production of four haploid cells, each with half the number of chromosomes as the parent cell. Which of the following is a characteristic of the cells produced by meiosis?

A. They have the same number of chromosomes as the parent cell

Correct B. They have half the number of chromosomes as the parent cell

C. They have twice the number of chromosomes as the parent cell

D. They have a variable number of chromosomes

Correct Answer: B

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Question 17

The diagram below shows a cross-section of a plant root. Which of the following is a function of the xylem in this root?

Correct A. Transporting water and minerals from the soil to the leaves

B. Transporting sugars and other organic compounds from the leaves to the rest of the plant

C. Supporting the structure of the plant

D. Storing food for the plant

Correct Answer: A

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Question 18

The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors. Which of the following is NOT one of the factors that can cause a change in allele frequency?

A. Mutation

B. Genetic drift

C. Gene flow

Correct D. Natural selection

Correct Answer: D

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Question 19

The diagram below shows a cross-section of a human heart. Which of the following is a function of the coronary arteries?

A. Transporting oxygenated blood from the lungs to the heart

B. Transporting deoxygenated blood from the heart to the lungs

Correct C. Supplying the heart muscle with oxygen and nutrients

D. Removing waste products from the heart muscle

Correct Answer: C

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Question 20

The diagram below shows a cross-section of a human eye. Which of the following is a function of the lens?

Correct A. Focu\sing light onto the retina

B. Allowing light to enter the eye

C. Regulating the amount of light that enters the eye

D. Removing waste products from the eye

Correct Answer: A

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Question 21

The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?

A. Random mating

B. No mutation

C. No gene flow

Correct D. No natural selection

Correct Answer: D

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Question 22

In the process of osmoregulation, the kidneys play a crucial role in maintaining the balance of electrolytes and water in the body. Which of the following is a key function of the kidneys in osmoregulation?

A. Excretion of waste products

Correct B. Regulation of electrolyte balance

C. Production of hormones

D. Maintenance of acid-base balance

Correct Answer: B

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Question 23

The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a key reac\tant in the light-dep\endent reactions of photosynthesis?

A. Water (H2O)

B. Carbon dioxide (CO2)

Correct C. Light energy (hv)

D. Oxygen (O2)

Correct Answer: C

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Question 24

The process of digestion in the small intestine involves the breakdown of proteins into smaller peptides and amino acids. Which of the following enzymes is responsible for this process?

A. Pep\sin

Correct B. Tryp\sin

C. Chymotryp\sin

D. Lactase

Correct Answer: B

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Question 25

The process of excretion in the kidneys involves the filtration of blood and the formation of urine. Which of the following is a key component of the nephron in the kidney?

Correct A. Glomerulus

B. Proximal convoluted tubule

C. Distal convoluted tubule

D. Collecting duct

Correct Answer: A

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