Question

The correct order of chemical composition of living tissues/cells in term of percentage of the total cellular mass is

• A. nucleic acids $>$ proteins $> H_2O >$ carbohydrates $>$ ions $>$ lipids
• B. $H_2O >$ proteins $>$ nucleic acids $>$ carbohydrates $>$ lipids $>$ ions
• C. $H_2O >$ proteins $>$ carbohydrates $>$ nucleic acids $>$ lipids $>$ ions
• D. lipids $>$ ions $>$ carbohydrates $> H_2O >$ proteins $>$ nucleic acids

Answer 1

Answer: (B)

$H_2O >$ proteins $>$ nucleic acids $>$ carbohydrates $>$ lipids $>$ ions

Answer 2

The average composition of a living cell is water $70-90\%$; proteins $10-15\%$; nucleic acids $5-7\%$; carbohydrates $3\%$; lipids $2\%$; ions $1\%$.