Biology lab I have the results not sure how to answer the questions though?

#2 - Baconpinkish little starch
#3 - Eggstayed clear whitenone
#4 - turkeyclear none
#5 - applepurple starch
#6 - saliva clear none


2. What were your controls for this experiment? What did they prove?

Controls were bacon, apple, turkey, egg, and saliva! Things with starches turned purple or pinkish.


3. Why did you wait 5 minutes before spraying with Lugol’s solution?



4. Which of the foods that you tested contained amylase? Which did not? What experimental evidence supports your claim?
 
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