Squiggly lines studded with ribosomes.

By OpenStax CC BY 3.0, via Wikimedia Commons

Your little sister is helping you identify organelles using a special high-power microscope. She doesn't know many words yet, but says she sees a "squiggle with bumps" like in the image above. She is most likely referring to...

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Type a concept, like “slope” or “photosynthesis”.

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