Unit 2

Front

What are lipids composed of?

Back

Lipids are not polymers of fatty acids and glycerol; they are composed of fatty acids and glycerol but do not form long chains like polymers.

Front

Is sugar always cyclic in cells?

Back

No, sugar can exist in both cyclic and linear forms in cells.

Front

What type of amino acid is hydrophilic and polar?

Back

Hydrophilic polar amino acids have side chains that can form hydrogen bonds with water.

Front

What is hydrolysis?

Back

Hydrolysis is the cellular process of breaking down polymers into monomers by adding water.

Front

What is the role of phospholipids in cells?

Back

Phospholipids are a major component of cell membranes, forming a bilayer that provides structure and protection.

Front

Define dehydration synthesis.

Back

Dehydration synthesis is a chemical reaction that involves the joining of two molecules with the removal of water.

Front

What is the difference between hydrophobic and hydrophilic substances?

Back

Hydrophobic substances repel water, while hydrophilic substances attract and interact with water.

Front

What are the building blocks of proteins?

Back

The building blocks of proteins are amino acids.

Front

What is the primary function of carbohydrates in living organisms?

Back

Carbohydrates serve as a primary energy source and structural components in cells.

Front

What is the structure of a phospholipid?

Back

A phospholipid consists of a hydrophilic (water-attracting) 'head' and two hydrophobic (water-repelling) 'tails'.