POST UTME SKYLINE UNIVERSITY 2019 Biology | Objective

Are you preparing for POST UTME SKYLINE UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2019 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a typical vertebrate, the brain is protected by the cranium, which is a derivative of the
A. diencephalon
B. mesencephalon
C. rhombencephalon
Correct D. telencephalon

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
The process by which plants convert light energy into chemical energy is known as
Correct A. photosynthesis
B. respiration
C. transpiration
D. translocation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
The diagram below shows the structure of a typical plant root. Identify the part labeled A.
Correct A. root hair
B. cortex
C. xylem
D. phloem

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
The rate of diffusion of a subs\tance through a membrane is influenced by the
Correct A. concentration gradient
B. temperature
C. pressure
D. surface area

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
The diagram below shows the structure of a typical animal cell. Identify the part labeled A.
Correct A. mitochondria
B. lysosome
C. ribosome
D. centriole

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
The process of meiosis in reproductive cells results in the production of gametes with half the number of chromosomes of the parent cell. Which of the following is a characteristic of the products of meiosis?
Correct A. Haploid cells with reduced genetic variation
B. Diploid cells with increased genetic variation
C. Triploid cells with no genetic variation
D. Polyploid cells with increased genetic variation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?
A. Vacuole
Correct B. Chloroplast
C. Nucleus
D. Mitochondria

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
The theory of evolution by natural selection was first proposed by Charles Darwin in his book 'On the Origin of Species'. Which of the following is a key concept of this theory?
A. Species evolve over time through a process of mutation and genetic drift
Correct B. Species evolve over time through a process of natural selection and genetic variation
C. Species remain unchanged over time due to the lack of genetic variation
D. Species evolve over time through a process of artificial selection and genetic engineering

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
The diagram below shows the structure of a human eye. Which of the following parts is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
The process of mitosis in somatic cells results in the production of two daughter cells that are genetically identical to the parent cell. Which of the following is a characteristic of the products of mitosis?
Correct A. Diploid cells with increased genetic variation
B. Haploid cells with reduced genetic variation
C. Triploid cells with no genetic variation
D. Polyploid cells with increased genetic variation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
In the xylem, water and minerals are transported from the roots to the leaves through a process called
Correct A. Transpiration Pull
B. Root Pressure
C. Capillary Action
D. Osmosis

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
The process by which microorganisms such as bacteria and fungi break down dead organic matter is called
Correct A. Decomposition
B. Respiration
C. Photosynthesis
D. Fermentation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
In the excretory system, the kidneys filter waste products from the blood and excrete them in the form of
Correct A. Urine
B. Feces
C. Sweat
D. Saliva

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
The theory of evolution by natural selection was first proposed by
Correct A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
In the process of respiration, glu\cose is broken down in the presence of oxygen to produce
Correct A. Carbon dioxide and water
B. Glu\cose and oxygen
C. ATP and NADH
D. Fatty acids and glycerol

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of what protein complex?
A. Protein Kinase C
Correct B. Cyclin-dep\endent kinase
C. Histone deacetylase
D. Protein phosphatase 2A

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
A researcher is studying the effect of pH on the activity of the enzyme lactase. Which of the following statements is true regarding the relationship between pH and enzyme activity?
A. Enzyme activity increases as pH increases
Correct B. Enzyme activity decreases as pH decreases
C. Enzyme activity is optimal at a pH of 7
D. Enzyme activity is unaffected by pH

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
A patient is diagnosed with a bacterial infection that is resis\tant to multiple antibiotics. Which of the following is a likely consequence of this resis\tance?
A. The bacteria will be more susceptible to other antibiotics
Correct B. The bacteria will be more resis\tant to other antibiotics
C. The bacteria will not be able to infect other cells
D. The bacteria will not be able to reproduce

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
A researcher is studying the effect of temperature on the growth rate of a microorganism. Which of the following is a likely consequence of increa\sing the temperature?
A. The growth rate will decrease
Correct B. The growth rate will increase
C. The growth rate will remain the same
D. The microorganism will not grow

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
A patient is diagnosed with a viral infection that is cau\sing inflammation in the body. Which of the following is a likely consequence of this inflammation?
A. The patient will experience a decrease in body temperature
Correct B. The patient will experience an increase in body temperature
C. The patient will experience a decrease in heart rate
D. The patient will experience a decrease in blood pressure

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
The diagram below shows a cross-section of a root hair cell. What is the function of the cell wall in this cell?
A. To provide structural support
Correct B. To facilitate the absorption of water and minerals
C. To synthesize proteins
D. To store nutrients

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
A 2.5 L flask contains 0.5 mol of an ideal gas at 27°C. What is the pressure of the gas?
A. 1.5 atm
Correct B. 2.5 atm
C. 3.5 atm
D. 4.5 atm

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
The diagram below shows a cross-section of a leaf. What is the function of the xylem in this leaf?
Correct A. To transport water and minerals from the roots to the leaves
B. To synthesize chlorophyll
C. To store nutrients
D. To regulate the opening and clo\sing of the stomata

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
A 0.5 L flask contains 0.2 mol of an ideal gas at 37°C. What is the volume of the gas?
A. 0.5 L
Correct B. 1.0 L
C. 1.5 L
D. 2.0 L

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
The diagram below shows a cross-section of a root. What is the function of the pericycle in this root?
Correct A. To store nutrients
B. To synthesize proteins
C. To regulate the opening and clo\sing of the stomata
D. To transport water and minerals from the roots to the leaves

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support