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Chemistry Now: Cheeseburger Chemistry: Tomatoes

How chemistry ripens and reddens tomatoes: ethylene, lycopene, gases, diffusion. This video, one in a six-part "Cheeseburger Chemistry" series, examines the role of the plant hormone ethylene, or C2H4, in ripening tomatoes (and other fruits); lycopene's connection to tomatoes' red color; and how ethylene gas diffuses.

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