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Chemical Composition of Cells (tests) - Coggle Diagram
Chemical Composition of Cells (tests)
Proteins
Biuret test:
Detect peptide bonds
If positive: turns from blue to violet
If negative: stays blue
Lipids
Sudan red test:
Detect lipids
If positive: Homogenous red solution
If negative: 2 layers (undissolved)
Carbohydrates
Molisch test:
Detects all carbohydrates:
If positive: red or violet ring
If negative: light yellow color
Iodine test:
Detects starch:
If positive: Dark blue solution
If negative: yellow solution
Benedict test:
Detects reducing sugars:
If negative: blue solution
If positive:
Green (traces of reducing sugar)
Orange (moderate)
Red (large amount of reducing sugar)