POST UTME COVENANT UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A cell is placed in a hypertonic solution. What will happen to the cell?
A. The cell will swell and eventually burst
B. The cell will shrink and lose water
C. The cell will remain unchanged
D. The cell will gain water and increase in size
Question 2
In the xylem, water and minerals are transported from the roots to the leaves through a process called
A. Transpiration Pull
B. Root Pressure
C. Transpiration Push
D. Capillary Action
Question 3
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. 0.72
D. 0.84
Question 4
A 20-year-old woman presents with a 3-month history of irregular menstrual cycles. Her karyotype is 46,XX. What is the most likely cause of her condition?
A. Polycystic ovary syndrome
B. Premature ovarian failure
C. Hyperprolactinemia
D. Thyroid dysfunction
Question 5
A patient is diagnosed with a viral infection caused by the influenza virus. Which of the following is the most likely effect of administering oseltamivir?
A. Inhibition of viral replication
B. Enhancement of viral replication
C. No effect on viral replication
D. Inhibition of host cell replication
Question 6
A 30-year-old man presents with a 2-year history of infertility. His semen analysis shows azoospermia. What is the most likely cause of his condition?
A. Klinefelter syndrome
B. Varicocele
C. Cryptorchidism
D. Obstructive azoospermia
Question 7
In a human body, what is the primary function of the nervous system?
A. To transport oxygen and nutrients to cells
B. To transport waste products away from cells
C. To regulate body temperature
D. To transmit and process information
Question 8
A 2.5 m long wire is connected to a 12 V battery. If the wire has a resis\tance of 1.2 ohms, what is the current flowing through the wire?
A. 10 A
B. 12 A
C. 15 A
D. 18 A
Question 9
The process by which an organism grows and develops from a \single cell to a complex multicellular organism is called
A. Mitosis
B. Meiosis
C. Differentiation
D. Development
Question 10
What is the primary function of the Golgi apparatus in a plant cell?
A. To synthesize proteins
B. To synthesize lipids
C. To modify and package proteins and lipids for transport
D. To synthesize carbohydrates
Question 11
The process of cell division that results in the production of four daughter cells, each with the same number and kind of chromosomes as the parent cell, is called
A. Mitosis
B. Meiosis
C. Binary Fission
D. Endosymbiosis
Question 12
A genetic cross between two pea plants with the genotype TT and tt results in offspring with the following phenotypes: 75% tall and 25% short. What is the genotype of the offspring?
A. Tt
B. Tt
C. Tt
D. Tt
Question 13
A population of bacteria is growing in a controlled environment. Which of the following is the most likely effect of increa\sing the concentration of glu\cose?
A. Increased growth rate of bacteria
B. Decreased growth rate of bacteria
C. No effect on bacterial growth
D. Inhibition of bacterial growth
Question 14
The process by which plants convert light energy into chemical energy is called
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 15
The diagram below shows a cross-section of a plant root. What is the function of the xylem tissue?
A. To transport water and minerals from the roots to the leaves
B. To store food and water in the roots
C. To produce hormones that regulate plant growth
D. To support the structure of the plant

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: