POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2017 Biology | Objective

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Question 1
In the context of coordination, what is the primary function of the hypothalamus in regulating body temperature?
A. To produce heat through shivering
B. To dissipate heat through sweating
C. To regulate body temperature through the hypothalamic thermostat
D. To produce cold through vasoconstriction
Question 2
The process of photosynthesis in plants involves the conversion of?
A. Light energy into chemical energy
B. Chemical energy into light energy
C. Water into glu\cose
D. Glu\cose into water
Question 3
A diagram of the human circulatory system is shown below. Identify the structure labeled A.
A. Aorta
B. Pulmonary artery
C. Lung
D. Heart
Question 4
A patient presents with symptoms of a severe respiratory infection. The patient's sputum sample is cultured and found to contain a large number of bacteria. Which of the following types of bacteria is most likely responsible for this patient's infection?
A. Staphylococcus aureus
B. Pseudomonas aeruginosa
C. Klebsiella pneumoniae
D. Escherichia coli
Question 5
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant plant life. Which of the following organisms is an example of a primary consumer in this e\cosystem?
A. A deer
B. A termite
C. A fungus
D. A bacterium
Question 6
The process of photosynthesis can be divided into two main stages: the light-dep\endent reactions and the light-indep\endent reactions. Which of the following is the primary function of the light-dep\endent reactions?
A. To produce glu\cose
B. To produce ATP and NADPH
C. To convert CO2 to glu\cose
D. To synthesize ATP
Question 7
The human digestive system is responsible for breaking down food into smaller molecules that can be absorbed and utilized by the body. Which of the following enzymes is responsible for breaking down proteins in the small intestine?
A. Amylase
B. Lipase
C. Tryp\sin
D. Lactase
Question 8
In the context of cell division, what is the primary function of the centrioles during the prophase stage of mitosis?
A. To form the spindle fibers
B. To replicate the DNA
C. To condense the chromosomes
D. To form the nuclear envelope
Question 9
A 28-year-old woman presents with a 2-year history of recurrent episodes of vertigo, tinnitus, and hearing loss. Her audiogram shows a sensorineural hearing loss. What is the most likely diagnosis?
A. Meniere's disease
B. Acoustic neuroma
C. Otosclerosis
D. Presbycusis
Question 10
The process by which an organism's genetic information is passed from one generation to the next is called
A. Heritability
B. Inheri\tance
C. Mutation
D. Genetic Drift
Question 11
A 30-year-old man presents with a 3-year history of progressive weakness and fatigue. His physical examination reveals a normal muscle strength, but his electromyogram shows a myopathic pattern. What is the most likely diagnosis?
A. Myasthenia gravis
B. Muscular dystrophy
C. Polymyositis
D. Lambert-Eaton syndrome
Question 12
Which of the following organs is responsible for the regulation of blood pH?
A. Kidneys
B. Liver
C. Pancreas
D. Lungs
Question 13
The study of the structure, behavior, and evolution of the whole organism is called
A. Embryo\logy
B. Histo\logy
C. Eco\logy
D. Taxonomy
Question 14
The process by which plants make their own food from sunlight, water, and carbon dioxide is called
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 15
The theory that all living organisms share a common ancestor is called
A. Evolutionary Theory
B. Common Descent Theory
C. Phy\logenetic Theory
D. Bio\logical Theory

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