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VEN 003 001 SQ 2025 Pre-class Quiz: April 10

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The onset of berry ripening is called véraison . This is the point during the growing season when berries start to change color (if they are a pigmented grape) and to swell and soften. At this time, the amount of sugar/sweetness level in the berries starts to [选择] decrease stabilize/remain constant increase and the acid/sourness level begins to [选择] decrease increase stabilize/remain constant .

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The question describes véraison, the onset of berry ripening, and asks what happens to sugar and acids at this stage. First, consider what happens to sugar content: as grapes ripen, photosynthates continue to be transported into the berries and converted into sugars (primarily glucose and fructose), causing the sugar level to increase. Th......Login to view full explanation

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