Topic 1 - Lipids

Question 1

Lipids:

Lipase breaks down into…?

Answer 1

Faty acids+glycerols

Question 2

Lipids:
Where is fat stored?

Answer 2

-Stored along organs (arteries)

Question 3

• Where are lipids in the body (cell wise)?
• what kind of substance is it + what is it made up of?

Answer 3

• Cell membrane
• organic substance ( oxygen+ hydrogen+ Carbon)

Question 4

What are lipids used as?

Answer 4

• Used as an energy store → use fat as energy
  (Stores more than carbs) + (gives 3x more than carbs)

Question 5

What contains lipids?
What’s it used for

(plant wise)

Answer 5

Seeds
- provides energy for when it starts to grow

Question 6

Lipids:
How many fatty acids to glycerol molecules?,

Answer 6

3 fatty acids: 1 glycerol

Question 7

Draw diagram of lipid

Answer 7

Check freeform (a-level Biology) for answer

Question 8

Structure of lipids:
- Made of?
-glycerol formula?
- how many types of fatty acid in living tissue?

Answer 8

• glycerol + fatty acid
• C3H803
• 70 diff types

Question 9

Alkane?
Saturated/unsaturated

Answer 9

• Single covenant bond
• saturated

Question 10

Alkene? - saturated/unsaturated

Answer 10

• 1 double bond
• unsaturated

Question 11

unsaturated →
1 double bond =
1 + double bond =

Answer 11

1 double bond → monosaturated
1+ double bond → polysaturated

Question 12

2 types of fatty acids?

Answer 12

• Saturated + unsaturated

Question 13

Triglycerides are formed?

Answer 13

• In an ester bond of fatty acid + glycerol through condensation

Question 14

Phospholipids?

Answer 14

• Similar to triglycerides → has a phosphate grp in place of I fatty acid

Question 15

Phospholipids:
Head =
Tail =
(Hydrophobic / hydrophilic?

Answer 15

Head = hydrophilic
Tail = hydrophobic