POST UTME WELLSPRING UNIVERSITY 2023 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. What is the term for the change in allele frequency in a population over time?
Question 2
In a tropical rainforest e\cosystem, the presence of a large population of herbivores can lead to a decrease in the population of a specific plant species. This is an example of a(n)
Question 3
A diagram of a human digestive system is shown below. What is the function of the structure labeled 'B'?
Question 4
A diagram of the human brain is shown below. Which part of the brain is responsible for controlling voluntary movements?
Question 5
In a population of 1000 individuals, 50% are heterozygous for the sickle cell gene, 30% are homozygous dominant, and 20% are homozygous recessive. What is the expected genotype and phenotype of the offspring of a heterozygous individual and a homozygous recessive individual?
Question 6
In a population of 1000 individuals, 70% are heterozygous for the ABO blood group system, 20% are homozygous dominant, and 10% are homozygous recessive. What is the genotype of the individual that is homozygous recessive?
Question 7
In the context of photosynthesis, what is the primary function of the light-dep\endent reactions?
Question 8
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
Question 9
A 5.0-liter solution contains 2.0 liters of ethanol and 3.0 liters of water. What is the mole \fraction of ethanol in the solution?
Question 10
A diagram shows a neuron with a d\endrite, cell body, and axon. What is the function of the d\endrite?
Question 11
A researcher is studying the classification of living things. Which of the following is a characteristic of the domain Archaea?
Question 12
A diagram of the human eye is shown below. Which part of the eye is responsible for adjusting the size of the pupil?
Question 13
A diagram of the human reproductive system is shown below. Which part of the system is responsible for producing sperm?
Question 14
A diagram shows a plant with 5 petals and 10 sepals. What is the name of the plant?
Question 15
A researcher is studying the effects of a new antibiotic on a bacterial population. The researcher observes that the bacteria are resis\tant to the antibiotic due to a mutation in the bacterial genome. What type of selection pressure is acting on the bacterial population?
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