Lipids

Question 1

Properties of Tryglycerides

Answer 1

-> low mass to energy - provides more energy than carbs
-> insoluble in water - doesn’t dissolve in water - doesn’t affect water potential
-> High hydrogen to oxygen - good storage of water

Question 2

Roles of Lipids

Answer 2

1.) Energy - Better energy source than carbohydrates
2.) Insulation - Conduct heat slowly
3.) Buoyancy
4.) Waterproofing - insoluble in water, waterproof cells.
5.) Protection - Protect the organs
6.) Cell Membrane - phospholipids help maintain the cell

Question 3

What is a fatty acid?

Answer 3

Hydrocarbon chain, ending in an acid from carboxyl group

Question 4

What is a fatty acid?

Answer 4

Hydrocarbon chain, ending in an acid from carboxyl group

Question 5

2 groups of lipids

Answer 5

-> Tryglycerides
-> Phospholipids

Question 6

Properties of unsaturated fats

Answer 6

-> Double bonds -> one double bond = monosaturated, more than one double bond = polysaturated

Question 7

Properties of phospholipid

Answer 7

-> has 2 fatty acids and a phosphate head

Question 8

Properties of saturated fats

Answer 8

1 carbon has 4 other carbons attached - single bonds - Straight chain

Question 9

Two forms of lipids

Answer 9

fat = solid
oil = liquid