NTA Abhyas NEET2020ChemistryBiomoleculesPractice
The following biomolecules are arranged in increasing order of their average percentage composition of the total cellular mass. Which of these orders is correct?
Options
- AIons < Lipids< Carbohydrates < Nucleic acids < Proteins
- BLipids < Ions< Carbohydrates < Nucleic acids < Proteins
- CIons < Carbohydrates< Lipids < Nucleic acids < Proteins
- DIons < Nucleic acids < Carbohydrates < Lipids < Proteins
Correct answer
A. Ions < Lipids< Carbohydrates < Nucleic acids < Proteins
Step-by-step solution
Maximum percentage is water in the cells. This is around 70-90%. Out of macromolecules proteins are highest that accounts for 10-15% of total cellular mass. This is followed by nucleic acids (5-7%) and then carbohydrates (3%). Lipids and ions constitute only 2% and 1% respectively.