What are lecithins primarily composed of?
Lecithinase Test | Theory & Results

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Science, Biology, Chemistry
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University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nucleic acids
Proteins
Carbohydrates
Phospholipids
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What bond does the less athenase enzyme break in phospholipids?
Between two glycerol molecules
Between two phosphates
Between glycerol and phosphorus
Between two fatty acids
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key characteristic of diacylglycerol?
It is hydrophobic
It is water-soluble
It is a protein
It is hydrophilic
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What indicates a positive less athenase test?
A blue halo
A white, opaque precipitate
A clear streak
No change in the agar
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the substrate for less athenase in the test?
Water
Sugar
Egg yolk
Egg white
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to phospholipids in a negative less athenase organism?
They are broken down
They remain unchanged
They form a precipitate
They turn blue
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What forms the white opaque border in a positive test?
Clumps of nucleic acids
Clumps of carbohydrates
Clumps of proteins
Clumps of diacylglycerol
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