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Cells and microscopy

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Which observation directly supports the origin of cells from existing cells?

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Which feature best distinguishes rough ER from smooth ER?

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Where would you expect an especially dense region of rRNA production?

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Which comparison is correct?

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50 divisions span 100 micrometres. What length is 15 divisions?

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Write a short answer, then compare it with a sample and check for missing ideas.

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Explain a pulse-chase sequence

A labelled amino acid is detected in rough ER after 2 minutes, Golgi after 8 minutes and secreted protein after 20 minutes. Explain the sequence and one limitation of this evidence.

Follow the labelled product and separate a supported route from proof of every step.

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