POST UTME LAUTECH 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The diagram below shows the structure of a prokaryotic cell. Which of the following is a characteristic of prokaryotic cells?
A. Presence of a true nucleus
B. Presence of mitochondria
C. Absence of a true nucleus
D. Presence of a cell wall
Question 2
A plant cell has a cell wall, a large central vacuole, and a small nucleus. Which of the following is NOT a characteristic of plant cells?
A. Cell wall
B. Large central vacuole
C. Small nucleus
D. Mitochondria
Question 3
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size after 3 hours is 1000, what is the growth rate?
A. 0.5
B. 1.0
C. 1.5
D. 2.0
Question 4
A diagram of a human eye is shown below. What is the function of the lens?
A. Focus light
B. Pupil dilation
C. Eye movement
D. Eye pressure
Question 5
The process by which plants convert light energy into chemical energy is called _______.
A. respiration
B. photosynthesis
C. transpiration
D. translocation
Question 6
The process of gas exchange in the human respiratory system involves the diffusion of oxygen into the blood and the diffusion of carbon dioxide out of the blood through which of the following structures?
A. Alveoli
B. Bronchioles
C. Trachea
D. Diaphragm
Question 7
The process of meiosis results in the production of four haploid cells from a diploid cell. Which of the following is a characteristic of the cells produced during meiosis?
A. They have the same number of chromosomes as the parent cell
B. They have half the number of chromosomes as the parent cell
C. They have a mix of paternal and maternal chromosomes
D. They are genetically identical to the parent cell
Question 8
A plant has a root system with a total surface area of 100 cm^2. If the root hairs have a length of 1 cm and a diameter of 0.01 cm, what is the total surface area of the root hairs?
A. 10 cm^2
B. 20 cm^2
C. 50 cm^2
D. 100 cm^2
Question 9
A diagram of a human reproductive system is shown below. Identify the organ responsible for producing sperm in males.
A. Testes
B. Epididymis
C. Vas Deferens
D. Prostate Gland
Question 10
A DNA molecule has the following sequence: 5'-ATCG-3'. What is the complementary sequence?
A. 5'-TAGC-3'
B. 5'-TCGA-3'
C. 5'-GCTA-3'
D. 5'-AGCT-3'
Question 11
A genetic disorder is caused by a mutation in a specific gene. The mutation results in the substitution of a \single amino acid in a protein. Which of the following types of mutations is this an example of?
A. Point mutation
B. Frameshift mutation
C. Deletion mutation
D. Insertion mutation
Question 12
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
A. To focus light on the retina
B. To detect light intensity
C. To regulate pupil size
D. To produce tears
Question 13
In a human nervous system, the transmission of signals from the sensory receptors to the central nervous system is primarily facilitated by which of the following types of neurons?
A. Motor neurons
B. Sensory neurons
C. Interneurons
D. Association neurons
Question 14
A diagram of a plant's xylem tissue is shown below. Identify the type of tissue responsible for transporting water and minerals from the roots to the leaves.
A. Xylem
B. Phloem
C. Cortex
D. Endoderm
Question 15
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 180
B. 200
C. 220
D. 240

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: