POST UTME DELSU 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 30-year-old woman is brought to the doctor with a history of irregular periods and infertility. The doctor suspects polycystic ovary syndrome (PCOS). Which of the following is a likely characteristic of this condition?
A. High levels of estrogen
B. High levels of progesterone
C. High levels of androgens
D. Low levels of insulin
Question 2
In a eukaryotic cell, the process of photosynthesis occurs in the
A. Mitochondria
B. Chloroplast
C. Nucleus
D. Endoplasmic reticulum
Question 3
In a tropical rainforest biome, what is the primary mechanism by which nutrients are cycled?
A. Decomposition by fungi and bacteria
B. Photosynthesis by plants
C. Nutrient uptake by animals
D. Weathering of rocks
Question 4
A diagram of the human brain is shown below. What is the function of the part labeled 'A'?
A. To process sensory information
B. To regulate body temperature
C. To produce hormones
D. To control movement
Question 5
A cell in the G2 phase of the cell cycle has a DNA content of 8C. If the cell proceeds to mitosis, what will be the DNA content of the daughter cells?
A. 4C
B. 8C
C. 16C
D. 32C
Question 6
A plant grows in a nutrient-poor soil. Which of the following is a likely adaptation of the plant?
A. Deep roots to access water deep in the soil
B. Large leaves to maximize photosynthesis
C. Small leaves to minimize water loss
D. Thick stems to store water
Question 7
A patient is diagnosed with a disease caused by a virus that has a mutation in its genome. The mutation results in the production of a non-functional protein. Which of the following is a possible consequence of this mutation?
A. The virus becomes more virulent
B. The virus becomes less virulent
C. The virus becomes resis\tant to antiviral drugs
D. The virus becomes more contagious
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. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 9
In the context of evolutionary theory, what is the primary mechanism by which genetic drift can lead to the fixation of a deleterious mutation?
A. Genetic hitchhiking
B. Genetic linkage
C. Genetic mutation
D. Genetic recombination
Question 10
In a population of 1000 individuals, 80% are homozygous dominant (BB), 15% are heterozygous (Bb), and 5% are homozygous recessive (bb). What is the probability that two individuals chosen at random will have offspring with the BB genotype?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 11
The growth of a plant is influenced by the
A. Presence of light
B. Absence of water
C. Presence of nutrients
D. Absence of oxygen
Question 12
A researcher is studying the effect of pH on the growth of E. coli. The researcher measures the growth rate of the bacteria at different pH levels and plots the data on a graph. If the graph shows a sigmoidal curve, what type of growth is the bacteria exhibiting?
A. Logistic growth
B. Exponential growth
C. Linear growth
D. No growth
Question 13
A population of 1000 individuals is divided into 10 groups of 100 individuals each. Each group has a different allele frequency for a particular gene. Which of the following is a likely outcome of this situation?
A. The population will become more homogeneous
B. The population will become more heterogeneous
C. The population will remain the same
D. The population will become extinct
Question 14
A solution of 0.1 M NaCl is diluted to 0.01 M. What is the new concentration of Na+ ions?
A. 0.01 M
B. 0.1 M
C. 0.05 M
D. 0.005 M
Question 15
A patient has a hormone imbalance. Which of the following hormones is responsible for regulating blood sugar levels?
A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroid hormone

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: