POST UTME NILE UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A researcher is studying the process of digestion in the human body. What is the primary function of the pancreas in this process?
A. Production of digestive enzymes
B. Production of hormones
C. Absorption of nutrients
D. Storage of bile
Question 2
A researcher is studying the effect of pH on the growth of E. coli. The graph below shows the growth of E. coli at different pH levels. What is the pH level at which the growth rate is maximum?
A. 6.5
B. 7.0
C. 7.5
D. 8.0
Question 3
A plant cell has a cell wall composed of cellulose, hemicellulose, and pectin. Which of the following is NOT a function of the cell wall?
A. providing structural support
B. regulating gas exchange
C. controlling water loss
D. facilitating cell division
Question 4
The Hardy-Weinberg principle states that a population will remain in genetic equilibrium if five conditions are met. Which of the following conditions is NOT necessary for genetic equilibrium?
A. Large population size
B. Random mating
C. No mutation
D. No gene flow
Question 5
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the
A. anaphase-promoting complex (APC)
B. cyclin-dep\endent kinase (CDK)
C. histone deacetylase (HDAC)
D. proteasome
Question 6
A species of fish has a body length of 0.5 meters. If the fish is swimming at a speed of 20 km/h, what is the power output of the fish?
A. 50 W
B. 100 W
C. 200 W
D. 500 W
Question 7
The diagram below shows a simple harmonic motion. What is the amplitude of the motion?
A. 2 cm
B. 4 cm
C. 6 cm
D. 8 cm
Question 8
The diagram below shows a cross-section of a plant root. Which of the following tissues is responsible for the transport of water and minerals from the root to the rest of the plant?
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 9
A diagram of the human digestive system is shown below. Which part of the digestive system is responsible for breaking down proteins?
A. Mouth
B. Esophagus
C. Stomach
D. Small intestine
Question 10
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 11
A patient is diagnosed with a bacterial infection caused by a Gram-positive bacterium. Which of the following antibiotics would be most effective against this infection?
A. Penicillin
B. Ciprofloxacin
C. Vancomycin
D. Amoxicillin
Question 12
A genetic disorder is caused by a point mutation in a gene that codes for a protein. What type of mutation is this?
A. Frameshift mutation
B. Point mutation
C. Deletion
D. Insertion
Question 13
The human eye has several sense organs that work together to enable us to see the world around us. Which of the following sense organs is responsible for detecting light and transmitting signals to the brain?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 14
A diagram of a plant root is shown below. Which of the following is a function of the root hair?
A. absorbing water and minerals
B. producing hormones
C. supporting the plant
D. regulating gas exchange
Question 15
The human body is composed of various systems, including the circulatory, respiratory, and nervous systems. Which of the following is a function of the nervous system?
A. Regulation of body temperature
B. Maintenance of homeostasis
C. Control of voluntary movements
D. Production of hormones

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: