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