Digestion Question Preview (ID: 52178)


First Test. TEACHERS: click here for quick copy question ID numbers.

Organic matter made of
a) Carbon of plant or animal origin
b) Nitrogen only
c) Cooked starch
d) Hydrogen only

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) None 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) None of the choices is correct

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