Lipids

Question 1

Can lipids mix with water?

Answer 1

No.

Question 2

What are the 3 categories lipids are split in?

Answer 2

Fats, Oils, Waxes

Phospholipids

Steroids

Question 3

What are the functions of Lipids?

Answer 3

Long term energy storage
very concentrated
twice the energy of carbohydrates!

Cell membrane formation
Insulation and
Cushions organs

Think whale blubber!

Make up hormones
Testosterone/estrogen

Question 4

Whats the structure of a lipid?

Answer 4

Made up of 2 structural units which a are glycerol molecule and 3 fatty acids.

This big molecule is called a triglyceride

Question 5

What are triglycerides made up of?

Answer 5

Triglycerides are made up of carbon, hydrogen, and oxygen atoms.

Liquid fats are called oils

Question 6

What are some characteristics for Saturated fats?

Answer 6

Linear
Tightly packed
Solid at room temp
No double bonds (full saturation)
From Animals
Difficult to break down

Ex: Butter, Lard

Question 7

Characteristics of Unsaturated fats?

Answer 7

Bent Molecule
Cannot tightly pack
Liquid at room temp
One or more double bonds
Plant based
Easily broken down

Ex: Vegetable oils, Olive oil

Question 8

What’s Cholesterol?

Answer 8

It’s a good molecule in cell membranes.

The bad ones cause heart disease (LDL)

Good ones can help (HDL)

Question 9

What are cell membranes made of?

Answer 9

Typically phospholipids. Heads are outside touching the water.
Tails are away from water (Phobic)

Forms a barrier.

Hand Sanitizer can break through those cell membranes.