Biology Food Tests Quiz
Authored by Matthew Grech
Biology
9th Grade
Used 5+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the test for glucose (a reducing sugar)?
Food sample is mixed with 2cm3 of ethanol and shaken
Add drops of Biuret solution to the food sample
Add drops of iodine solution to the food sample
Add Benedict's solution into sample in a test tube and heat at 60 - 70 °c in water bath for 5 minutes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can we test for the presence or absence of starch in a food sample?
Food sample is mixed with 2cm3 of ethanol and shaken
Add drops of Biuret solution to the food sample
Add drops of iodine solution to the food sample
Add Benedict's solution into sample solution in test tube and heat at 60 - 70 °c in water bath for 5 minutes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the test for protein?
Add Benedict's solution into sample solution in test tube and heat at 60 - 70 °c in water bath for 5 minutes
Add drops of iodine solution to the food sample
Add drops of Biuret solution to the food sample
Food sample is mixed with 2cm3 of ethanol and shaken
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can we test for lipids in a food sample?
Add drops of iodine solution to the food sample
Add Benedict's solution into sample solution in test tube and heat at 60 - 70 °c in water bath for 5 minutes
Food sample is mixed with 2cm3 of ethanol and shaken, then water is added
Add drops of Biuret solution to the food sample
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be observed for a positive Benedict's test for glucose?
Colour change from orange-brown to blue-black
Colour change from blue to violet / purple
Colour change from blue to orange or brick red
Cloudy emulsion forming
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be observed for a positive iodine test for starch?
Colour change from orange-brown to blue-black
Colour change from blue to orange or brick red
Colour change from blue to violet / purple
Cloudy emulsion forming
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should be observed for a positive Biuret test for protein?
Colour change from orange-brown to blue-black
Colour change from blue to orange or brick red
Colour change from blue to violet / purple
Cloudy emulsion forming
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