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CU_8-9 Digestion/Tests For Identification Of Organic Matter
Test Description: This game aims to review different tests used to identify organic matter( in Food).
Instructions: Answer all questions to get your test result.
1) Organic matter made of:
A
Hydrogen only
B
None of the choices is correct
C
Carbon of plant or animal origin
D
Nitrogen only
2) Fehling test identifies the presence of :
A
All choices are correct
B
All types of sugars
C
Reducing sugars
D
Cooked starch
3) Iodine test identifies the presence of :
A
Cooked starch
B
lipids
C
Protein
D
Reducing sugars
4) Biuret test identifies the presence of :
A
Lipids
B
Cooked starch
C
Simple sugars
D
Proteins
5) Biuret test is performed:
A
With heating
B
Without heating
C
At very high temperature
D
All choices are correct
6) If we put few drops of iodine test on a slice of bread, the obtained result is:
A
Dark blue color appears
B
Brown orange color appears
C
Violet color appears
D
Non of the choices
7) If a biuret test is performed on a food containing proteins, the expected result is:
A
Dark blue color
B
Violet color
C
None of the choices is correct
D
Brick red precipitate
8) When we rub certain food on a paper, translucent spots appear. This indicates that this food contains
A
Cooked starch
B
All choices are correct
C
Proteins
D
Lipids
9) The following sugar(s) is (are) reducing sugar(s):
A
Glucose
B
Fructose
C
All choices are correct
D
Maltose
10) Bread is a complex food since it is:
A
Composed of different matter and substances
B
Non of the choices is correct
C
Composed of starch only
D
Composed of protein only
*select an answer for all questions
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