POST UTME RHEMA UNIVERSITY 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 50 mL sample of 0.1 M NaOH is titrated with 0.1 M HCl. What is the pH of the solution after the titration?
A. 7
B. 8
C. 9
D. 10
Question 2
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 3
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. 0.4
B. 0.2
C. 0.8
D. 0.1
Question 4
In the context of evolutionary theory, what is the term for the process by which a species becomes reproductively isolated from other species?
A. Speciation
B. Adaptation
C. Mutation
D. Genetic drift
Question 5
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 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
A population of rabbits is growing according to the \logistic growth equation: dN/dt = rN\( 1 - N/K \). If the initial population size is 100, the carrying capacity is 1000, and the growth rate is 0.5, what is the population size after 5 years?
A. 250
B. 500
C. 750
D. 1000
Question 8
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 9
In the process of digestion, what is the primary function of the pancreas?
A. Production of digestive enzymes
B. Absorption of nutrients
C. Storage of bile
D. Regulation of blood sugar levels
Question 10
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 11
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 12
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
Question 13
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 14
The human body is composed of various tissues, including epithelial, connective, muscle, and nervous tissues. Which of the following types of tissues is characterized by the presence of a basement membrane and the ability to regenerate?
A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue
Question 15
A diagram of the xylem tissue is shown below. What is the function of the xylem parenchyma cells?
A. To transport water and minerals from the roots to the leaves
B. To store food and water in the plant
C. To provide structural support to the plant
D. To regulate gas exchange in the plant

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