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55 questions
Which of the following tests for starch?
Iodine
Benedict's
Biuret
Emulsion
Which of the following tests for protein?
Iodine
Benedicts
Biuret
Emulsion
Which of the following tests for glucose?
Iodine
Benedicts
Biuret
Emulsion
When starch is present iodine turns...
purple
blue-black
orange
brick red
When protein is present Biuret turns...
purple
blue-black
orange
brick red
A negative test for starch will cause Iodine to stay...
orange/red
blue
black
brick red
A negative test for protein will cause Biuret to stay...
brick red
blue
black
orange
A negative test for glucose will cause Benedicts to stay...
brick red
blue
black
orange
Which chemicals did you mix to test for proteins - biuret test?
Ethanol and water
Iodine and potassium permanganate
Benedicts Solution
Sodium Hydroxide and Copper Sulphate
How do you test for lipids?
By using Ethanol and water
By using Benedicts solution
By using Iodine
By using Biuret test
What is a positive result for the lipid emulsion test?
milky white colour
clear
yellow
green
I am used to test for the presence of complex carbohydrates (starch)
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
I am used to test for the presence of simple carbohydrates (sugars)
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
I am used to test for the presence of protein
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
I am used to test for the presence of lipids (fats)
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
If I am positive, I will produce a precipitate
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
If I am positive, I will turn red
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
If I am positive, I will turn dark blue/black
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
If I am positive, I will turn purple
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
In this experiment, you must put your test tubes into a hot water bath
Benedict's Test
Biurets Test
Iodine Test
Ethanol Emulsion Test
Which of the following tests for starch?
Iodine Solution
Benedict's Solution
Biuret Solution
Ethanol
Which of the following tests for protein?
Iodine Solution
Benedict's Solution
Biuret Solution
Ethanol
When protein is present Biuret turns...
purple
blue-black
orange
blue
In a negative test for starch, what colour will iodine solution be?
yellow-brown
blue
black
blue-black
A negative test for glucose will cause Benedicts to stay...
brick red
blue
black
yellow
If you drop iodine solution on bread, it changes to Black. What does this show?
Bread contains protein
Bread contains sugar
Bread contains starch
Bread contains lipids?
How do you test for lipids?
By using Ethanol and water
By using Benedicts solution
By using Iodine solution
By using Biuret test
The building blocks of proteins are
carbohydrates
amino acids
sugars
fatty acids
How do you test for lipids?
By using Ethanol
By using Benedicts solution
By using Iodine Solution
By using Biuret test
This photo represents a
negative test for glucose
negative test for protein
positive test for starch
positive test for glucose
The test tubes in the photo represent a negative and positive result for
Benedict's with glucose
Biuret with protein
Iodine with starch
Ethanol with fat
Which of the following tests for lipids?
Iodine solution
Benedicts solution
Biuret test
Ethanol
Which of the following tests for Glucose (sugar)?
Iodine solution
Benedict's solution
Biuret test
Ethanol
When lipid (fat) is present ethanol turns...
Clear
Cloudy/White
Black
Orange
When Starch is present Iodine Solution turns...
Clear
Cloudy/White
Black
Orange
The building blocks of lipids are
Starches
Fatty acids and Glycerol
Sugars
Amino Acids
The building blocks of starch are
glycerol
amino acids
sugars
fatty acids
What tests for starch?
Benedict's Solution
Iodine Solution
Iodine
Ethanol
Which biomolecules did we test for in the lab?
simple carbohydrates (monosaccharides)
lipids
proteins
nucleic acids
complex carbohydrates (polysaccharides)
What color does Sudan III solution turn in the presence of a lipid?
range from yellow to red
blue/black
purplish/violet
red globules
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