1.1 Biodiversity Questions and Key Words

With reference to Carbohydrate, explain the difference between a condensation reaction and a hydrolysis reaction

State whether these carbohydrates are mono-, di-, or polysaccharides. Also give their role in living organisms. State whether each occur in animals, plants or both.
- Lactose
- Cellulose
- Glucose
- Glycogen

Hydrophilic

Hydrophobic

Name the products formed and the type of bond broken when a tryglyceride is broken down

Suggest why parts of organisms that move, such as seeds, use lipids as an energy store rather than carbohydrates

What is meant my metabolic water?

State two differences between a triglyceride and a phospholipid

Which end of the phospholipid molecule lies to the outside of the membrance

State through which part of the membrane each of the following passes in order to enter or leaving a cell
1. Sodium Ion
2. A lipid soluble molecule

List the four bonds present in the tertiary structure of a protein

Classify the following proteins as fibrous or globular:
- Insulin
- Collagen
- Keratin
- Lysozyme (an enzyme)

Why is water described as a polar molecule?

State what property of water allows the following?
- How insects are able to walk on water
- How fish are able to live in a frozen pond
- Why does sweating keep us cool

Why are the following properties of water important to living organisms?
1. It is a universal solvent
2. It is transparent