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BSC 103 Mod 3

Practice Lab- Quiz 3

QuestionAnswer
Which of the following indicates for simple sugars (glucose)? Benedicts solution
Which of the following indicates for proteins? Biuret's Reagent
Proteins are present in ______. both plant and animal cells
Which of the following indicates for simple starch? iodine
Which of the following biological macromolecules (molecules of life) was omitted from this lab? nucleic acids
In the presence of protein, iodine changes to a purple color. false
If one adds iodine to milk, how long must one wait for a purplish black color change to occur? forever
What is the role of the Benedict's solution in test tube # 4? Benedict's solution shows that starch breaks down into glucose in the presence of amylase, The Benedict's solution shows that starch breaks down into glucose, and The Benedict's solution indicates the presence of glucose
What is the role of the iodine solution that was added to test tube # 1? serves an an indicator for starch
Is Sudan IV soluble in oil? yes
Which of the observed test tubes represent the following reaction? Oil & vinegar dressing + Sudan IV --> Red stain dispersed in oil only 3- they seperate
Why isn't there a color change to purplish-black when iodine is added to milk? starch is not present
The term that describes the affect that high temperatures have on enzymes is _______. denatures
In the presence of glucose, Biuret's reagent changes from blue to purple in color. false
Amylase is ________. found in saliva, necessary for the break down of starch in the mouth, and an enzyme
Created by: pfrizzel
 

 



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