POST UTME LASU 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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 2
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 3
A diagram of a human kidney is shown below. What is the function of the renal corpuscle?
A. To filter the blood
B. To regulate the blood pressure
C. To produce urine
D. To store waste products
Question 4
What is the term for the process by which plants convert light energy into chemical energy?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 5
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. 0.72
Question 6
A 2.0 L flask contains 0.5 M glu\cose. If 0.5 L of 1.0 M glu\cose is added to the flask, what is the new concentration of glu\cose?
A. 0.5
B. 0.75
C. 1.0
D. 1.25
Question 7
A patient is diagnosed with a disease caused by a virus that has a mutation in its genome. The virus has a mutation in the gene that codes for the protein responsible for the disease. What type of mutation is this?
A. Point mutation
B. Frameshift mutation
C. Deletion
D. Insertion
Question 8
In the process of excretion, what is the primary function of the kidneys?
A. Regulation of blood pressure
B. Production of urine
C. Storage of waste products
D. Regulation of electrolyte balance
Question 9
A diagram of a human brain is shown below. What is the function of the cerebral cortex?
A. To regulate the body temperature
B. To control the heart rate
C. To process sensory information
D. To store memories
Question 10
In the process of respiration, what is the byproduct of glycolysis?
A. ATP
B. NADH
C. FADH2
D. Pyruvate
Question 11
In the context of cell division, what is the primary function of the centrioles during the prophase stage?
A. To form the spindle fibers
B. To replicate the DNA
C. To condense the chromatin
D. To form the nuclear envelope
Question 12
A plant has a photosynthetic rate of 10.0 μmol CO2 s^-1. If the light intensity is increased by a factor of 2, what is the new photosynthetic rate?
A. 5.0
B. 10.0
C. 15.0
D. 20.0
Question 13
A 50.0 g sample of glu\cose is dissolved in 100.0 mL of water. What is the molarity of the solution?
A. 1.0
B. 2.0
C. 3.0
D. 5.0
Question 14
A plant cell is placed in a solution with a high concentration of salt. What will happen to the cell's turgor pressure?
A. It will increase
B. It will decrease
C. It will remain the same
D. It will become negative
Question 15
What is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Natural selection
D. Heritability

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: