POST UTME UNILAG 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of cellular respiration, what is the primary function of the electron transport chain?
A. To generate ATP through substrate-level phosphorylation
B. To pump protons across the mitochondrial inner membrane
C. To reduce NADH and FADH2 to NAD+ and FAD
D. To produce water and carbon dioxide as byproducts
Question 2
In a classification system, the domain Eukarya includes organisms with complex cells that have a true nucleus. Which of the following is an example of a characteristic of a eukaryotic cell?
A. Presence of a cell wall
B. Presence of a true nucleus
C. Presence of mitochondria
D. Presence of a flagellum
Question 3
A patient with a rare genetic disorder has a mutation in the gene encoding the \alpha-globin subunit of hemoglobin. Which of the following is a likely consequence of this mutation?
A. Increased oxygen delivery to tissues
B. Reduced oxygen delivery to tissues
C. No change in oxygen delivery to tissues
D. Increased carbon dioxide production
Question 4
A diagram of the human nervous system is shown below. Which part of the nervous system is responsible for controlling involuntary movements?
A. The central nervous system
B. The peripheral nervous system
C. The autonomic nervous system
D. The somatic nervous system
Question 5
A diagram of the human skeletal system is shown below.
A. The femur is the longest bone in the human body.
B. The humerus is the bone of the upper arm.
C. The tibia is the bone of the lower leg.
D. The fibula is the bone of the upper leg.
Question 6
The theory of evolution by natural selection was first proposed by?
A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace
Question 7
The type of reproduction that involves the fusion of two gametes is
A. asexual reproduction
B. sexual reproduction
C. mitosis
D. meiosis
Question 8
A diagram of the human nervous system is shown below. Which part of the nervous system is responsible for controlling voluntary movements?
A. The central nervous system
B. The peripheral nervous system
C. The autonomic nervous system
D. The somatic nervous system
Question 9
A diagram of the human reproductive system is shown below. Which part of the reproductive system is responsible for producing sperm?
A. The ovaries
B. The testes
C. The epididymis
D. The vas deferens
Question 10
In a desert e\cosystem, the process of osmoregulation is crucial for the survival of organisms. Which of the following is an example of a mechanism used by a desert-dwelling organism to regulate its body fluids?
A. Countercurrent heat exchange in the kidneys
B. Evaporation of water from the skin
C. Concentration of urine
D. Dilation of blood vessels
Question 11
In the context of excretion and osmoregulation, what is the primary function of the kidneys in regulating electrolyte balance?
A. Regulation of blood pH
B. Maintenance of blood pressure
C. Removal of waste products
D. Regulation of electrolyte balance
Question 12
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Water
D. Glu\cose
Question 13
In a random sample of 1000 individuals from a population, 250 have the genotype 'Bb'. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'B'?
A. 0.25
B. 0.3
C. 0.35
D. 0.4
Question 14
The process by which plants convert light energy into chemical energy is known as
A. photosynthesis
B. respiration
C. transpiration
D. translocation
Question 15
A diagram of a plant cell is shown below. Identify the organelle responsible for protein synthesis.
A. Mitochondria
B. Chloroplast
C. Ribosome
D. Lysosome

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