1) Yeast is a living organism and it needs __, ___, and ___, to activate it. a) water, food, warmth b) water vapor, food, warmth 2) When yeast uses this energy, it produces waste or ___. a) O2 b) CO2 3) Plants make their own food, which is a type of ___. a) CO2 b) sugar (glucose) 4) Plants need __, __, and __, for photosynthesis to occur. a) dark, water, carbon dioxide b) light, water, carbon dioxide 5) The products of photosynthesis are __, __, and __. a) sugar, oxygen, and water b) yeast, oxygen, and water 6) Leaves are green because of __. a) CO2 b) oxygen c) chlorophyll 7) Food is produced in the ___ part of the plant a) red b) green c) blue 8) ____is the nutrient plant cells need to perform their functions a) chlorophyll b) sugar 9) Chlorophyll is important because _________. a) It absorbs energy from blue and red light and uses them to make sugar molecules during photosynthesis b) it's more like borophyll

Nutrient systems

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