lipids

Question 1

give three roles of lipids

Answer 1

source of energy
insulation
cell membrane structure

Question 2

give a characteristics of lipids

Answer 2

insoluble in water

Question 3

what is the formation of triglyceride

Answer 3

1- glycerol
3- fatty acids

Question 4

what is the fatty acid structure

Answer 4

carboxyl group (cooh)
and the ‘R’ group

Question 5

how are fatty acids joined to the glycerol

Answer 5

an ester bond is formed between the two in condensation reaction

Question 6

what is a saturated lipis

Answer 6

chain has no carbon-carbon double bonds

Question 7

what is unstaurated

Answer 7

double bond between the carbon - carbon molecules

Question 8

what is a phospholipid

Answer 8

two fatty acid tails attached to a phosphate group ‘head’

Question 9

what is the properties of a phosphate head

Answer 9

hydrophilic

Question 10

what is the properties of the fatty acid tails

Answer 10

hydrophobic

Question 11

due to this polar properties what is formed

Answer 11

a bilayer

Question 12

cna you explain how triglycerides and phospholipids are two different groups

Answer 12

triglycerides contain one glycerol and three fatty acids joined by an ester bond in a condensation reaction
phospholipids contain one phosphate group and two fatty acid tails

Question 13

Can you describe how a condensation reaction between glycerol and a
fatty acid (RCOOH) forms an ester bond?

Answer 13

it is a condensation reaction where water is removed between the glycerol and fatty acids