Один:липид

Question 1

Saponifiable Lipids:fatty acids

Define Amphipathic

fatty acids are amphipathic molecules with G.F:(CH3-(CH2)n-COOH)(1<n<21)

Answer 1

Amphipathic molecule like fatty acids have long hydrocarbon chains(non-polar,hydrophobic and unbranched that end with COOH(carboxyl group)that is polar and hydrophilic.

Question 2

Fill in the blanks

Fatty acids …… Occur as free molecules.They are …..

Answer 2

1)rarely/sparingly
2)esterified

esterified:linked by an ester bond

Question 3

Fill in the blank

Unsaturated Fatty acids have atleast one ……….

Unsaturated Fatty Acids are mainly founds in Plants.

Usually liquid at room temperature ex:olive oil

Answer 3

Double bond

up to six double bonds

Question 4

Fill in the Blank

Saturated Fatty acids are solid at room temperature and are usually of ….. cells

SFA examples are Butyric acid/Myristic/Palmitic acid

Answer 4

animal

FattyAcids are highly energetic and oxidized in mitochondria+peroxisomes

transformed into H2O and CO2

Question 5

Answer the question

How are Triglycerides formed?

triglycerides are diverse

Answer 5

Glycerol+3Fatty acids=Triglycerides(neutral since they lack polar groups)they are stored in adipose tissue as energy reserve.

Question 6

Fill in The Blanks

Phospholipids form the basic structure of cell membranes.They have …..Polar head and …..hydrophobic tail.

Answer 6

large-long

phospholipids are diverse

Question 7

Answer the question

Two groups of phospholipids are:

Answer 7

Glycerol-derived phospholipids and Sphingosine-derived phospholipids.

Question 8

Answer the question

Phospholipid is=

phospholipid=x+y

Answer 8

Phospholipid=phosphate+2fattyacid+X

where x can be choline-ehtanolamine …

Question 9

Fill in the blank

Sphingolipids do….contain glycerol

Answer 9

not

Question 10

glycolipids coat …..

Answer 10

plasma membrane

Question 11

The structural difference between glycoplipids and phospholipids is:

Answer 11

presence of sugar motif instead of phosphate.

Question 12

2 types of glycolipids are:

Answer 12

glycerol derived glycolipids
shpingosine derived glycolipids

glycerol for plants
sphingosine for animals

Question 13

Simplest glycolipid is Cerebrosides which are made of:

Answer 13

simple oses and lipid

Question 14

What are Cerides?

abundant in cork and bee wax

ex:Cetylic alcohol

Answer 14

Cerides are esters of fatty acids with fatty alcohol

fatty alcohol is long hydrocarbon tail ended by a hydroxyl group OH.