POST UTME RHEMA UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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'?
A. 0.36
B. 0.64
C. 0.48
D. 0.16
Question 2
The nervous system is responsible for transmitting signals from sensory receptors to the brain, where they are interpreted and processed. Which of the following types of neurons is primarily responsible for transmitting signals from sensory receptors to the spinal cord?
A. Sensory neurons
B. Motor neurons
C. Interneurons
D. Association neurons
Question 3
In a typical plant cell, what is the primary function of the vacuole?
A. Storage of nutrients and waste products
B. Regulation of cell turgor pressure
C. Production of digestive enzymes
D. Maintenance of cell shape
Question 4
A 100 mL sample of a 0.2 M glu\cose solution is digested with 0.5 M HCl solution. What is the concentration of the glu\cose solution after the digestion?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 5
A 2.5 L flask contains 1.5 mol of an ideal gas at 27°C. If 1.0 mol of the gas is removed, what is the new pressure of the gas?
A. 1.5 atm
B. 2.5 atm
C. 3.0 atm
D. 4.0 atm
Question 6
The human body is made up of various tissues, including epithelial, connective, and muscle tissues. Which of the following is a characteristic of epithelial tissue?
A. It is found in the dermis layer of the skin
B. It is composed of muscle cells
C. It forms the lining of organs and glands
D. It is found in the bone marrow
Question 7
The respiratory system is responsible for the exchange of gases between the body and the environment. Which of the following is a function of the alveoli?
A. To exchange oxygen and carbon dioxide
B. To filter the air we breathe
C. To regulate body temperature
D. To produce mucus
Question 8
A diagram of the human circulatory system is shown below. What is the function of the pulmonary valve?
A. To regulate blood flow from the heart to the lungs
B. To regulate blood flow from the lungs to the heart
C. To regulate blood pressure in the aorta
D. To regulate blood flow from the heart to the aorta
Question 9
The human eye is a complex sensory organ that is responsible for detecting light and transmitting visual information to the brain. Which of the following structures is responsible for focu\sing light onto the retina?
A. Cornea
B. Iris
C. Lens
D. Retina
Question 10
A plant cell has a vacuole that contains 0.5 M sucrose. If the cell membrane is selectively permeable and has a permeability coefficient of 2.5 x 10^-6 cm/s, what is the rate of sucrose efflux?
A. 1.25 x 10^-5 mol/s
B. 2.5 x 10^-5 mol/s
C. 5.0 x 10^-5 mol/s
D. 7.5 x 10^-5 mol/s
Question 11
A diagram of the human circulatory system is shown below. Which part of the system is responsible for transporting oxygenated blood to the body?
A. Arteries
B. Veins
C. Capillaries
D. Heart
Question 12
Which of the following microorganisms is responsible for the production of botulinum toxin?
A. Clostridium difficile
B. Clostridium botulinum
C. Escherichia coli
D. Staphylococcus aureus
Question 13
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'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 14
In the process of photosynthesis, what is the byproduct of the light-dep\endent reactions?
A. ATP and NADPH
B. Glu\cose and oxygen
C. Water and carbon dioxide
D. Nitrogen and phosphorus
Question 15
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens

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: