Lecture 15/16 - Lipid and Cell membrane structure

Question 1

What are micelles?

Answer 1

The shape that fatty acids form, consists of hydrophilic heads facing outward and hydrophobic tails facing inwards.

Question 2

Fatty acids are numbered?

Answer 2

from carboxyl-end to methyl-end.

Question 3

Omega fatty acids are named for the position of the double bond closest to the ____ end of the fatty acid.

Answer 3

Methyl

Question 4

These two omega fatty acids cannot be synthesized by humans?

Answer 4

Linoleic acid and Linolenic Acid.

Question 5

ALA is inefficiently converted to these two omega fatty acids?

Answer 5

EPA and DHA

Question 6

This fatty acid has 12 carbons and 0 double bonds?

Answer 6

Laurate

Question 7

This fatty acid has 14 carbons and 0 double bonds?

Answer 7

Myristate

Question 8

This fatty acid has 16 carbons and 0 double bonds?

Answer 8

Palmitate

Question 9

This fatty acid has 18 carbons and 0 double bonds?

Answer 9

Stearate

Question 10

This fatty acid has 20 carbons and 0 double bonds?

Answer 10

Arachidate

Question 11

This fatty acid has 22 carbons and 0 double bonds?

Answer 11

Behenate

Question 12

This fatty acid has 24 carbons and 0 double bonds?

Answer 12

Lignocerate

Question 13

This fatty acid has 18 carbons and 1 double bond?

Answer 13

Oleate

Question 14

This fatty acid has 16 carbons and 1 double bond?

Answer 14

Palmitoleate

Question 15

This fatty acid has 18 carbons and 2 double bonds?

Answer 15

Linoleate

Question 16

This fatty acid has 18 carbons and 3 double bonds?

Answer 16

Linolenate

Question 17

This fatty acid has 20 carbons and 4 double bonds?

Answer 17

Arachidonate

Question 18

This fatty acid has 20 carbons and 5 double bonds?

Answer 18

EPA

Question 19

This fatty acid has 22 carbons and 6 double bonds?

Answer 19

DHA

Question 20

Sphingomyelin attaches a fatty acid to a/an?

Answer 20

amine

Question 21

Glycosphingolipids are important for?

Answer 21

AO blood type antigens + cell signaling

Question 22

These are found in plants and bacteria, but rarely animals

Answer 22

Glycoglycerolipids

Question 23

This molecule adds rigidity to cell membranes?

Answer 23

Cholesterol

Question 24

What is the fluid mosaic model?

Answer 24

Basically states that cell membranes are made up of several different types of structures that allow for their flexible nature

Question 25

T/F Transverse diffusion is faster than later diffusion in lipids?

Answer 25

False; Lateral diffusion is faster

Question 26

Membranes are symmetrical/asymmetrical in structure?

Answer 26

asymmetrical