Practice post utme futo biology 2017 Past Questions

Question 1

A researcher studying the eco\logy of a freshwater lake notices that the water level is fluctuating. Which of the following biomes is most likely to be affected by this fluctuation?

A. Temperate rainforest

Correct B. Freshwater lake

C. Grassland

D. Desert

Correct Answer: B

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Question 2

A plant cell has a large central vacuole that contains a high concentration of solutes. What is the primary function of this vacuole?

A. Storage of water and nutrients

Correct B. Regulation of cell turgor pressure

C. Production of cell wall components

D. Transport of molecules across the cell membrane

Correct Answer: B

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Question 3

A geneticist is studying the inheri\tance of a trait in a population of pea plants. The trait is determined by a \single gene with two alleles. What is the probability that a heterozygous individual will pass on the dominant allele to its offspring?

Correct A. 1/2

B. 1/4

C. 3/4

D. 1

Correct Answer: A

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Question 4

A researcher is studying the transport of oxygen in the human body. Which of the following transport systems is responsible for carrying oxygen from the lungs to the tissues?

A. Xylem

Correct B. Blood

C. Phloem

D. Tracheids

Correct Answer: B

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Question 5

A bio\logist is studying the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?

A. Mitochondria

Correct B. Chloroplast

C. Endoplasmic reticulum

D. Lysosome

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

C. No gene flow

Correct D. No natural selection

Correct Answer: D

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Question 7

In a population of 1000 individuals, the frequency of the dominant allele is 0.6. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the recessive allele?

A. 0.2

Correct B. 0.4

C. 0.6

D. 0.8

Correct Answer: B

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Question 8

A plant with the genotype RR is crossed with a plant with the genotype rr. What is the probability that the offspring will have the genotype Rr?

A. 0.25

Correct B. 0.5

C. 0.75

D. 1.0

Correct Answer: B

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Question 9

The process of meiosis results in the production of gametes with half the number of chromosomes as the parent cell. What is the term for this process?

A. Mitosis

Correct B. Meiosis

C. DNA replication

D. Gene expression

Correct Answer: B

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Question 10

The classification of living organisms into kingdoms is based on the following characteristics. Which of the following is a characteristic of the kingdom Animalia?

Correct A. Multicellularity

B. Cell wall

C. Flagellum

D. Symbiotic relationship

Correct Answer: A

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Question 11

In a population of 1000 individuals, 20% are heterozygous for the ABO blood group system, 40% are homozygous dominant, and 40% are homozygous recessive. What is the genotype of the individual that is heterozygous for the ABO blood group system?

A. IA

Correct B. IA

C. ii

D. Ii

Correct Answer: B

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Question 12

A plant with the genotype RrSs is crossed with a plant with the genotype RRSS. What is the probability that the offspring will have the genotype RrSs?

Correct A. 0.25

B. 0.5

C. 0.75

D. 1.0

Correct Answer: A

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Question 13

A 2.5 L solution of HCl is mixed with 2.5 L of NaOH. If the initial concentration of HCl is 0.5 M and the initial concentration of NaOH is 0.5 M, what is the concentration of the resulting solution?

A. 0.25 M

Correct B. 0.5 M

C. 1.0 M

D. 1.5 M

Correct Answer: B

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Question 14

A 10 mL sample of a solution containing 0.1 M glu\cose is diluted to 100 mL. What is the concentration of the resulting solution?

A. 0.001 M

Correct B. 0.01 M

C. 0.1 M

D. 1.0 M

Correct Answer: B

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Question 15

A 5 g sample of a subs\tance is dissolved in 100 mL of water. If the molarity of the resulting solution is 0.5 M, what is the molar mass of the subs\tance?

A. 10 g/mol

B. 20 g/mol

Correct C. 50 g/mol

D. 100 g/mol

Correct Answer: C

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Question 16

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 17

In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. What is the frequency of the dominant allele 'A'?

Correct A. 0.8

B. 0.6

C. 0.4

D. 0.2

Correct Answer: A

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Question 18

The process of mitosis results in the production of daughter cells that are genetically identical to the parent cell. Which of the following stages of mitosis is responsible for the separation of chromosomes?

A. Prophase

B. Metaphase

Correct C. Anaphase

D. Telophase

Correct Answer: C

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Question 19

The human body is composed of approximately 60% water. Which of the following organs is responsible for the regulation of water balance in the body?

Correct A. Kidneys

B. Liver

C. Pancreas

D. Heart

Correct Answer: A

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Question 20

The process of photosynthesis occurs in the chloroplasts of plant cells. Which of the following is a byproduct of photosynthesis?

Correct A. Oxygen

B. Carbon dioxide

C. Water

D. Glu\cose

Correct Answer: A

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Question 21

The human eye is composed of the cornea, lens, and retina. Which of the following is responsible for the focu\sing of light in the eye?

A. Cornea

Correct B. Lens

C. Retina

D. Iris

Correct Answer: B

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Question 22

The process of digestion occurs in the mouth, esophagus, stomach, small intestine, and large intestine. Which of the following is responsible for the breakdown of proteins in the digestive system?

Correct A. Salivary glands

B. Pancreas

C. Small intestine

D. Liver

Correct Answer: A

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Question 23

The human body is composed of approximately 60% water. Which of the following organs is responsible for the regulation of water balance in the body?

Correct A. Kidneys

B. Liver

C. Pancreas

D. Heart

Correct Answer: A

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Question 24

The process of mitosis results in the production of daughter cells that are genetically identical to the parent cell. Which of the following stages of mitosis is responsible for the separation of chromosomes?

A. Prophase

B. Metaphase

Correct C. Anaphase

D. Telophase

Correct Answer: C

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Question 25

The human eye is composed of the cornea, lens, and retina. Which of the following is responsible for the focu\sing of light in the eye?

A. Cornea

Correct B. Lens

C. Retina

D. Iris

Correct Answer: B

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