1013- Molecules of life

Question 1

What are the 3 chemical properties of carbohydrates?

Answer 1

Polar, Water soluble and hydrophilic

Question 2

What is the chemical formula for carbohydrates?

Answer 2

n x CH2O

Question 3

Solubility properties of lipids

Answer 3

are water- insoluble but are soluble in organic solvents

Question 4

4 examples of lipids

Answer 4

cholesterol , steroids, glycerophospholipids, triacylglycerols

Question 5

What are triacylglycerols

Answer 5

Important energy storage molecules which are hydrophobic.

Question 6

Amphipathic - Give an example

Answer 6

hydrophilic head and hydrophobic tail , glycerophospholipids

Question 7

Function of cholesterol

Answer 7

Rigid structure inserts between glycerophospholipids so modulates membrane fluidity

Question 8

How does ATP carry its energy

Answer 8

phosphoanhydride bonds

Question 9

Amino acids with side chains that are acidic at physiological pH

Answer 9

negative charge

Question 10

Amino acids with side chains that are basic at physiological pH

Answer 10

positive charge

Question 11

Give examples of a 3-carbon , 5-carbon and a 6-carbon hexose

Answer 11

glyceraldehyde , ribose and glucose

Question 12

Give examples of a 3-carbon , 5-carbon and a 6-carbon ketose

Answer 12

dihydroxyacetone , ribulose and fructose