Lipids

Question 1

a class of large biomolecules. Biological substances that are insoluble e in water (non-polar)

Answer 1

Lipids

Question 2

fat is used for energy during exerctae, empecially after glycogen
in depleted.

Answer 2

Energy Storage

Question 3

sontributing to membrane tension. rigidity, and overall shape

Answer 3

Cell Membrane

Question 4

our body cequines energy, fatty acids are released from adipose cells and mobilized for use

Answer 4

Mobilization / Utilization

Question 5

Lipids were first classified in 1835 by Henri Braconnot in two categories

Answer 5

Solid grease and Fluid oil

Question 6

These are esters of fatty acid with
vanous alcohols. (Triglycerides, Waxes)

Answer 6

Simple lipids or Homolipids

Question 7

These are esters of fatty acids with alcohol and possess additional group(s) also (Phospholipids,
Glycolipids)

Answer 7

Compound lipids or Heterolipids

Question 8

These are thes substance derived from simple and compound lipids by hydrolysis. (Fatty acids, Cholesterol, Steroids)

Answer 8

Derived lipids

Question 9

are triesters of fatty acids and glycerol. They are nonpolar and
hydrophobic in nature

Answer 9

TRIGLYCERIDES

Question 10

an alcohol with three carbons.

Answer 10

Glycerol

Question 11

long hydrocarbon chains with carboxyl group at one end.

Answer 11

Fatty Acid

Question 12

are esters of long-chain fatty acids and long-chain alcohol. They are solid at room temperature and completely water insoluble. They are formed by the esterification of long-chain fatty acids and

monohydroxy alcohol of higher molecular weight

Answer 12

Waxes

Question 13

There are two types of waxes commonly used for food coatings
and applications-

Answer 13

paraffin wax and carnauba wax

Question 14

Consist of glycerol+2 fatty acids + phosphate group.

With a hydrophilic “head” containing a phosphate group and two hydrophobic “tails” derived from fatty acids, joined by an alcohol residue (usually a glycerol molecule)

Answer 14

PHOSPHOLIPID

Question 15

Hydro means water, philic means attract

Answer 15

Head

Question 16

Hydro means water, phobic means scared.

Answer 16

Tails

Question 17

contain a carbohydrate group (attached through a glycosidic bond) in combination with glycerol and fatty acids. It’s the third major class of membrane lipids. The head group of the molecule contains sugar (one or more) connected directly to the hydroxyl group at C1 of the ceramide moiety

Answer 17

GLYCOLIPIDS

Question 18

have no double or triple bonds. They are a simple, unbranched, and linear chain of CH2 groups connected with a carbon-carbon single bond and one carboxylic acid at its end. Their general formula is CH3-(CH2)n-COOH wheren represents the number of methylene groups

Answer 18

Saturated fatty acids

Question 19

have one or more double or triple bonds.

So, they can either be monounsaturated or polyunsaturated. The

naturally occurring fatty acids are generally in the cas

configuration, rather than in trans configuration.

Answer 19

Unsaturated fatty acids

Question 20

is often called ‘bad cholesterol because too much

of it can clog up your arteries and lead to health problems later on,

such as heart disease, heart attacks and strokes.

Answer 20

CHOLESTEROL

Question 21

occur in plants, animals, yeasts, and molds but not in bacteria. They may exist in free form or combined with fatty acids or carbohydrates.

Answer 21

Steroids