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What is an organelle?

A. A small structure within a cell that serves specialized function
B. A specialized protein that speeds up chemical reactions
C. Packets within the cell cytoplasm that contain powerful enzymes
D. The semipermeable membrane surrounding a cell

User Niki B
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The answer is A:  A small structure within a cell that serves specialized function.  Some examples of organelles would be ribosomes, mitochondria, cytoplasm, and the nucleus. 
User Jake Griffin
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The answer is A! Hope that helps.

User Brent Kerby
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