Fats/Lipids

Question 1

The lipid family

Answer 1

Triglyceride (head)
Phospholipids (structural)
Sterols - eg.cholesterol

Question 2

Structure of a triglyceride

Answer 2

Carbs have C,H,O Proteins have N as well.

Fats have 3 fatty acid chains consisting of C and H

Glycerol backbone

Question 3

Difference between fats and oils

Answer 3

Fats solid at room temp
Oils liquid at room temp

Fats generally saturated
Oils generally unsaturated

Fats more in animal
Oils more in plants

Question 4

The 3 fatty acids

Answer 4

Saturated: H on both sides no double bonds

Unsaturated: one or more double bond between carbons

Polyunsaturated: multiple double bonds BETWEEN CARBONS
ESSENTIAL

MONO=1
monosaturated

Question 5

Risks of saturated fat

Answer 5

Increase risk of cardiovascular disease

Polyunsaturated fats however deacrease risk and lower cholesterol and are essential

Question 6

What are trans fat

Answer 6

Hydrogenated fats generally found in bakery foods
Clogs arteries
Blood clots
Heart attack
Stroke

Question 7

HDL and LDL

Answer 7

HDL H = healthy
LDL = bad for health

(Two components of cholesterol)

Question 8

Functions of Lipids in the body

Answer 8

Absorption of fat soluble vitamins

Contribute to cellular structure

Provision of energy

Provide insulation and protect vital organs

Question 9

Fat soluble vitamins

Answer 9

A D E & K

Question 10

Amino acids are polymer or monomer

Answer 10

MONOMER

THEY GO TOGETHER TO MAKE A POLYMER/POLYPEPTIDE CHAIN

Question 11

How many kJ/g do fats provide

Answer 11

37.7kj/g