POST UTME UNILAG 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The diagram below shows the structure of a mitochondrion. Which of the following is a function of the cristae?
A. Protein synthesis
B. Electron transport
C. Fatty acid synthesis
D. Oxidative phosphorylation
Question 2
A plant grows in a nutrient-poor soil and develops a deep taproot to access water and minerals. Which of the following best describes the type of plant growth regulation?
A. Hormone-mediated regulation
B. Environmental regulation
C. Genetic regulation
D. Nutrient-mediated regulation
Question 3
In the xylem, water and minerals are transported from the roots to the leaves through the process of
A. transpiration pull
B. root pressure
C. osmosis
D. active transport
Question 4
A researcher is studying the structure of a protein and wants to determine the secondary structure of a particular region. Which of the following techniques would be most appropriate for this task?
A. X-ray crystal\lography
B. Nuclear magnetic resonance (NMR) spectroscopy
C. Circular dichroism (CD) spectroscopy
D. Infrared (IR) spectroscopy
Question 5
The Hardy-Weinberg principle states that the frequency of alleles in a population remains cons\tant from generation to generation in the absence of certain factors. Which of the following is a factor that can lead to a change in allele frequency?
A. Mutation
B. Genetic drift
C. Gene flow
D. Natural selection
Question 6
A patient presents with a severe case of sepsis. Which of the following is a likely cause of the disease?
A. Infection with a Gram-positive bacterium
B. Infection with a Gram-negative bacterium
C. Infection with a fungus
D. Infection with a virus
Question 7
A researcher is studying the effects of climate change on plant growth. Which of the following is a likely consequence of increased CO2 levels in the atmosphere?
A. Increased plant growth and productivity
B. Decreased plant growth and productivity
C. No effect on plant growth and productivity
D. Increased plant growth in some species, but decreased growth in others
Question 8
A 25-year-old male patient presents with symptoms of hypogonadism. Which of the following hormones is most likely to be deficient?
A. Insulin
B. Growth Hormone
C. Testosterone
D. Adrenaline
Question 9
The process of mitosis involves the division of a eukaryotic cell into two daughter cells. Which of the following is a stage of mitosis?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 10
What is the process by which plants convert light energy into chemical energy?
A. Respiration
B. Photosynthesis
C. Decomposition
D. Fermentation
Question 11
What is the primary function of the mitochondria in a cell?
A. To synthesize proteins
B. To store genetic information
C. To generate energy for the cell
D. To regulate cell growth and division
Question 12
In a tropical rainforest, the canopy layer is characterized by a dense network of tree branches and leaves. Which of the following adaptations would be most beneficial for a plant species growing in this environment?
A. Large, flat leaves for maximum photosynthesis
B. Deep roots to access water deep in the soil
C. Thick, waxy stems to prevent water loss
D. Small, needle-like leaves to reduce transpiration
Question 13
In the classification of living things, the kingdom Monera is characterized by the absence of
A. cell wall
B. nucleus
C. mitochondria
D. chloroplasts
Question 14
The genetic principle of segregation states that each pair of alleles separates from each other during gamete formation. This is an example of
A. indep\endent assortment
B. segregation
C. incomplete dominance
D. codominance
Question 15
The process of cellular respiration involves the breakdown of glu\cose to produce energy in the form of ATP. Which of the following is a byproduct of this process?
A. carbon dioxide
B. oxygen
C. water
D. all of the above

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