Lodine diffused into the cell , reacted with starch and turned black in color. The movement of
the iodine is an example of *

Active transport

Passive transport

Meiosis

Mutation

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the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.