STANDARDZoology-Biomolecules
STANDARD Zoology Lipids and Amino Acids MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Which one of the following biomolecules is correctly characterized?
A
Lecithin - a phosphorylated glyceride found in cell membrane.
B
Palmitic acid - an unsaturated fatty acid with 18 carbon atoms.
C
Adenylic acid - adenosine with a glucose phosphate molecule.
D
Alanine amino acid - contains an amino group and an acidic group anywhere in the molecule.
Correct Answer
Option A
Detailed Explanation
Lecithin is a triglyceride lipid where one fatty acid is replaced by phosphoric acid linked to choline, forming a common membrane lipid with both hydrophilic and hydrophobic properties. Palmitic acid is a saturated fatty acid with 16 carbon atoms. Adenylic acid is a nucleotide, not a glucose phosphate molecule. Alanine is a nonpolar amino acid with a specific structure.
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