Chapter 7 Membrane structure and funtions

Question 1

Channel proteins

Answer 1

• provide a hydrophilic tunnel through the membrane

Question 2

Answer 2

Channel protein

Question 3

Form a fluid bilayer
Unsaturated fatty tails maintains fluidity

Answer 3

phospholipid

Question 4

between phospholipid
provides stiffness
keeps membrane fluid and lower temps

Answer 4

Cholesterol (steriod)

Question 5

Answer 5

phospholipid

Question 6

Answer 6

Cholesterol (steriod)

Question 7

Answer 7

carrier protein

Question 8

Answer 8

Cell Recognition protein

Question 9

Answer 9

Receptor Protein

Question 10

Answer 10

Enzymatic Protein

Question 11

Answer 11

Junction Protein

Question 12

Binds to specific substances and change their shape to move a molecule through

Answer 12

Carrier proteins

Question 13

The phospholipid bilayer of the plasma membrane restricts the passage of

Answer 13

Ions (Na+, Ca+, K+, Cl-)
polar molecules such as sugars and amino acids

Question 14

Cell identification

Answer 14

Cell recognition protein

Question 15

Are glycoproteins with sugar chains attahced

Answer 15

Cell recognition protein

Question 16

make organ transplant difficult to achieve

Answer 16

Cell recognition protein

Question 16

Helps cells recognize foreign invaders plays a role in the immune system

Answer 16

Cell recognition protein

Question 17

Answer 17

Cell recognition protein

Question 18

Cell communitcation

Answer 18

Receptor proteins

Question 19

Has a specific shape for binding to signal molecules such as a hormone or neurotransmitter

Answer 19

Cell recognition protein

Question 20

Faulty receptor proteins can result in disorder such as dwarfism, type II diabetes, and or intersex individuals

Answer 20

Cell recognition protein

Question 21

Answer 21

Cell recognition protein

Question 22

Catalyst

Answer 22

Enzymes

Question 23

speeds of specific chemical reactions

Answer 23

Enzymes

Question 24

many are embedded in membranes of cells which provide a work surface for metabolic reactions

Answer 24

Enzymes

Question 25

Answer 25

Enzymes

Question 26

Cell adhesions

Answer 26

Junction proteins

Question 27

joins cells together to form tissues so they can fulfill a funnction

Answer 27

Junction proteins

Question 28

Caridac muscle cells are tightly welded together by junction proteins

Answer 28

Junction proteins

Question 29

Membrane carbohydrates: Branched sugar chains are attached to protein lipids

Answer 29

- Glycoproteins or glycolipids - Vary from cell to cell and individual to individual.

Question 30

A lipid with one or more covalently attached carbohydrates.

Answer 30

Glycolipid

Question 31

A protein with one or more covalently attached carbohydrates

Answer 31

Glycoprotein

Question 32

- Non-polar molecules: Fatty acid, vitamins (A,D,E,K), steroids - Oxygen, Carbon dioxide, water

Answer 32

Substances can move through

Question 33

Answer 33

Pharephral protein

Question 34

Answer 34

Carrier protein/integral protein

Question 35

Answer 35

Cholestrol

Question 36

Answer 36

Glycoprotein, Carbohydrate/Polysaccharide

Question 37

Ions: Na+, K+, Ca^2+, H+ Polar molecules: Polysaccharides, Amino acid, glucose, Nucleic acids

Answer 37

Substances cant move through