POST UTME OSUSTECH 2019 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
In the context of M\endelian genetics, what is the term for the phenomenon where a dominant allele is expressed even though a recessive allele is present?
Question 2
A plant is placed in a growth chamber with a controlled environment. The plant's growth is measured over time. What is the term for the rate of growth of the plant?
Question 3
A solution contains 0.1 M glu\cose and 0.2 M fructose. What is the total molarity of the solution?
Question 4
In a population of rabbits, the average litter size is 8 kits. However, some litters have as few as 2 kits, while others have as many as 12 kits. What type of distribution is this an example of?
Question 5
A population of bacteria is growing exponentially. If the initial population size is 100 and the growth rate is 0.05 per hour, what is the population size after 5 hours?
Question 6
In the cell cycle, what is the stage where the cell prepares for division?
Question 7
A diagram of a mitotic spindle is shown below. Which of the following is a function of the mitotic spindle?
Question 8
A species of fish has a streamlined body shape that allows it to swim quickly through the water. However, this body shape also makes it difficult for the fish to maneuver in tight spaces. What type of trade-off is this an example of?
Question 9
A 35-year-old man presents with a 2-year history of progressive weakness and wasting of the proximal muscles of the lower limbs. Which of the following muscle groups is most likely affected?
Question 10
In a photosynthetic pathway, which of the following is the primary electron acceptor in the light-dep\endent reactions?
Question 11
A 25-year-old woman presents with primary amenorrhea and a history of virilization. Which of the following genetic conditions is most likely responsible for her symptoms?
Question 12
A species of bird has a beak shape that is well-suited for cracking open nuts. However, this beak shape also makes it difficult for the bird to eat seeds. What type of evolutionary trade-off is this an example of?
Question 13
A diagram of a human eye is shown below. What is the function of the part labeled 'E'?
Question 14
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'?
Question 15
A diagram of a human brain is shown below. What is the function of the part labeled 'F'?
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