TREE PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A scientist is attempting to test for starch/complex carbohydrates and he/she added Lugol’s (Iodine). The test tube turned black. Was there presence of starch/complex carbohydrates in the sample?
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Yes
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No
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -In the presence of starch, iodine changes its color from brown to blue-black or purple. So, iodine can be used to test the presence of starch.
Detailed explanation-2: -Iodine solution is used to detect the presence of starch in food. If starch is present in food product, it turns blue-black color when iodine solution is added.
Detailed explanation-3: -Sudan III is used to identify the presence of lipids in liquids. It will stain fat cells red.
There is 1 question to complete.