Gel electrophoresis is a technique used to separate: MCQ with Answer and Explanation

Gel electrophoresis is a technique used to separate:
A. Lipids based on solubility
B. Proteins based on charge only
C. Cells based on density
D. DNA fragments based on size
Answer: Option D
Solution (By JKExamLibrary)
Gel electrophoresis is a widely used technique to separate charged molecules, primarily DNA, RNA, or proteins, in an electric field through a gel matrix (usually agarose for DNA). DNA fragments are separated based on their size (length in base pairs). Smaller fragments move faster and further through the gel than larger ones. The separated DNA bands are visualized using ethidium bromide and UV light.

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B. Human population
C. Endangered and threatened species
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Correct Answer: Option C


Explanation:
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Correct Answer: Option D


Explanation:
A synapse is the junction where a nerve impulse is transmitted from one neuron to another. The synaptic cleft is the microscopic, fluid-filled gap between the presynaptic neuron (axon terminal) and the postsynaptic neuron (dendrite or cell body). Neurotransmitters are released into this cleft to carry the signal across to the next cell.

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Question #3
Consider statements about human diseases: 1. Cholera is caused by a bacterium. 2. Polio is caused by a virus. 3. Ringworm is caused by a fungus. Which are correct?
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Correct Answer: Option C


Explanation:
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