CU_8-9 Digestion/Tests For Identification Of Organic Matter Question Preview (ID: 51831)


This Game Aims To Review Different Tests Used To Identify Organic Matter( In Food). TEACHERS: click here for quick copy question ID numbers.

Organic matter made of:
a) Carbon of plant or animal origin
b) Nitrogen only
c) Hydrogen only
d) None of the choices is correct

Fehling test identifies the presence of :
a) All types of sugars
b) Reducing sugars
c) Cooked starch
d) All choices are correct

Iodine test identifies the presence of :
a) Reducing sugars
b) Protein
c) lipids
d) Cooked starch

Biuret test identifies the presence of :
a) Lipids
b) Simple sugars
c) Cooked starch
d) Proteins

Biuret test is performed:
a) With heating
b) Without heating
c) At very high temperature
d) All choices are correct

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

If a biuret test is performed on a food containing proteins, the expected result is:
a) Dark blue color
b) Brick red precipitate
c) None of the choices is correct
d) Violet color

When we rub certain food on a paper, translucent spots appear. This indicates that this food contains
a) Lipids
b) Proteins
c) Cooked starch
d) All choices are correct

The following sugar(s) is (are) reducing sugar(s):
a) Fructose
b) Maltose
c) All choices are correct
d) Glucose

Bread is a complex food since it is:
a) Composed of starch only
b) Composed of protein only
c) Composed of different matter and substances
d) Non of the choices is correct

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