NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
None of the compounds in this group dissolve in water
A
Carbohydrates
B
Proteins
C
Lipids
D
Nucleic acids
Explanation: 

Detailed explanation-1: -This is because they are primarily nonpolar carbon-carbon or carbon-hydrogen bonds in hydrocarbons. Hydrophobic, or “water repelling, ‘’ non-polar compounds cannot dissolve in water. In a cell, lipids serve numerous purposes.

Detailed explanation-2: -Lipids are all insoluble in polar solvents like water but highly soluble in the non-polar or weakly polar organic solvents, including ether, chloroform, benzene, and acetone. In fact, these four solvents are often referred to as “lipid-solvents” or “fat-solvents".

Detailed explanation-3: -Lipids are chemical substances that are nonpolar in nature. Because water is a polar molecule, they are only soluble in nonpolar solvents and insoluble in water.

There is 1 question to complete.