POST UTME BSU 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant cell is placed in a solution with a high concentration of sucrose. What is the expected effect on the cell's turgor pressure?
A. The turgor pressure will increase
B. The turgor pressure will decrease
C. The turgor pressure will remain unchanged
D. The cell will undergo plasmolysis
Question 2
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is the primary reac\tant in the light-dep\endent reactions?
A. Water
B. Carbon dioxide
C. Light energy
D. ATP
Question 3
The process by which a cell divides into two daughter cells is called _______.
A. Mitosis
B. Meiosis
C. Binary Fission
D. Endosymbiosis
Question 4
In the context of asexual reproduction, what is the primary advantage of budding in yeast?
A. Increased genetic diversity
B. Efficient use of resources
C. Reduced risk of predation
D. Enhanced adaptability to changing environments
Question 5
The process of digestion in the human body involves the breakdown of complex nutrients into simpler molecules. Which of the following enzymes is responsible for breaking down carbohydrates into simple sugars?
A. Amylase
B. Lipase
C. Pep\sin
D. Tryp\sin
Question 6
A patient is diagnosed with a bacterial infection. The bacteria are resis\tant to multiple antibiotics. What is the likely cause of this resis\tance?
A. Horizontal gene transfer
B. Vertical gene transfer
C. Mutation
D. Gene flow
Question 7
Which of the following statements accurately describes the role of the hypothalamus in the regulation of body temperature?
A. The hypothalamus acts as a thermostat to maintain a cons\tant body temperature
B. The hypothalamus is responsible for regulating body temperature through the release of hormones
C. The hypothalamus has no role in regulating body temperature
D. The hypothalamus is responsible for regulating body temperature through the contraction and relaxation of muscles
Question 8
A patient is diagnosed with a genetic disorder caused by a point mutation in a protein-coding gene. What is the likely effect on the protein structure and function?
A. No effect on protein structure and function
B. Altered protein structure and function
C. Loss of protein function
D. Gain of protein function
Question 9
A study on the genetic variation of a population found that the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 0
B. 2
C. 20
D. 200
Question 10
The diagram below shows the structure of a plant cell. What is the function of the cell wall?
A. to provide structural support
B. to regulate the movement of materials
C. to produce energy
D. to synthesize proteins
Question 11
A diagram of a plant root system is shown below. Which of the following structures is responsible for the absorption of water and minerals from the soil?
A. The root hairs
B. The stem
C. The leaf
D. The xylem
Question 12
A researcher is studying the effect of pH on the growth of a microorganism. The researcher measures the growth rate of the microorganism at different pH levels and plots the data on a graph. What type of graph would the researcher most likely use?
A. bar chart
B. pie chart
C. line graph
D. scatter plot
Question 13
The process of cellular respiration involves the breakdown of glu\cose to produce ATP. Which of the following is the primary function of the electron transport chain?
A. To generate ATP
B. To produce NADH and FADH2
C. To reduce oxygen to water
D. To produce heat
Question 14
A researcher is studying the effect of temperature on the rate of photosynthesis in a plant. The researcher measures the rate of photosynthesis at different temperatures and plots the data on a graph. If the rate of photosynthesis is highest at 25°C, what can be concluded about the optimal temperature for photosynthesis?
A. 20°C is optimal for photosynthesis
B. 25°C is optimal for photosynthesis
C. 30°C is optimal for photosynthesis
D. 35°C is optimal for photosynthesis
Question 15
A researcher is studying the genetic variation in a population of Drosophila melanogaster. What is the primary purpose of u\sing a Hardy-Weinberg equilibrium model?
A. To predict the frequency of alleles in a population
B. To determine the genetic diversity of a population
C. To identify the genetic basis of a trait
D. To estimate the population size

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