POST UTME NOUN 2017 Biology | Objective

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Question 1
The process of mitosis involves the division of a eukaryotic cell into two daughter cells. Which of the following stages of mitosis is characterized by the condensation of chromosomes?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 2
The diagram below shows the life cycle of a plant. Which stage is responsible for the production of spores?
A. Gametophyte
B. Sporophyte
C. Zygote
D. Tetrad
Question 3
The process of cellular respiration involves the breakdown of glu\cose to produce ATP. Which of the following is a byproduct of glycolysis?
A. Pyruvate
B. Lactic acid
C. Ethanol
D. Carbon dioxide
Question 4
The diagram below represents a cross-section of a human kidney. Which of the following structures is responsible for the filtration of blood?
A. A
B. B
C. C
D. D
Question 5
In the context of asexual reproduction, what is the primary advantage of budding in yeast?
A. Increased genetic diversity
B. Efficient use of resources
C. Reduced risk of predation
D. Improved adaptation to environment
Question 6
The diagram below shows the structure of a cell. Which part is responsible for the synthesis of proteins?
A. Mitochondria
B. Ribosome
C. Endoplasmic Reticulum
D. Golgi Apparatus
Question 7
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. What is the name of the enzyme that catalyzes this reaction?
A. Amylase
B. Lactase
C. Tryp\sin
D. Pep\sin
Question 8
A population of a species is found in a region with a stable climate. Which of the following is a likely outcome for this population?
A. The population will increase exponentially
B. The population will decrease exponentially
C. The population will remain stable
D. The population will fluctuate
Question 9
In the xylem, water and minerals are transported from the roots to the leaves through the process of
A. transpiration
B. osmosis
C. diffusion
D. active transport
Question 10
In the context of evolutionary theory, what is the term for the process by which a population becomes reproductively isolated from other populations, leading to the formation of new species?
A. Speciation
B. Adaptation
C. Mutation
D. Genetic drift
Question 11
The diagram below shows a simple circuit with a battery, a resistor, and a switch. If the switch is closed, what will be the direction of the current flow?
A. From A to B
B. From B to A
C. From C to B
D. From B to C
Question 12
The Hardy-Weinberg principle states that a population will be in genetic equilibrium if the following conditions are met. Which of the following is NOT one of the conditions?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 13
A genetic disorder is caused by a mutation in a gene that codes for a protein involved in DNA replication. Which of the following is a likely outcome for an individual with this disorder?
A. They will have a higher risk of developing cancer
B. They will have a lower risk of developing cancer
C. They will have a normal risk of developing cancer
D. They will not develop cancer
Question 14
The Hardy-Weinberg principle states that the frequency of alleles in a population remains cons\tant from generation to generation. Which of the following is a condition necessary for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
D. All of the above
Question 15
The human eye has a unique structure that allows it to focus on objects at varying dis\tances. Which part of the eye is responsible for changing the shape of the lens to accommodate different focal lengths?
A. Cornea
B. Iris
C. Lens
D. Retina

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