What is the name of the transparent part of the eye that is located behind the lens and helps to focus light onto the retina?
A. Vitreous humor
B. Aqueous humor
C. Retina
D. Crystalline lens
Correct Answer: B. Aqueous humor
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What is the function of the transparent part of the eye that is located in the front of the eye?
A. To protect the eye
B. To focus light onto the retina
C. To control the amount of light entering the eye
D. All of the above
Correct Answer: D. All of the above
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What is the role of neurotransmitters in nerve impulses?
A. They create the electrical charge of the impulse
B. They transmit the impulse across the synapse
C. They control the strength of the impulse
D. They regulate the frequency of impulses
Correct Answer: B.They transmit the impulse across the synapse
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How does a nerve impulse travel along an axon?
A. By diffusion
B. By active transport
C. By facilitated diffusion
D. By saltatory conduction
Correct Answer: D.By saltatory
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What is the main component of a nerve impulse?
A. Sodium ions
B. Calcium ions
C. Potassium ions
D. Chloride ions
Correct Answer: C. Potassium ions
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Which one of the following vaccines was first discovered
A. Small pox
B. BCG
C. Cholera
D. Typhoid
Correct Answer: Small pox
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Hepatitis is a disease of which of the following organ?
A. Heart
B. Liver
C. Lungs
D. Brain
Correct Answer: Liver
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