Cell Membrane 3.3-3.5

Question 1

Cell membrane has 2 _____________________ layers

Answer 1

Phospholipid

Question 2

Cell membrane is a

Answer 2

Boundary

Question 3

Cell membrane is ____________________ aka let some things pass

Answer 3

Semi permeable

Question 4

Cell membrane is __________________ permeable

Answer 4

Selectively

Question 5

What is the cell membrane selectively permeable about

Answer 5

Size and polarity

Question 6

What other molecules are in the membrane

Answer 6

Protein and protein channels

Question 7

_____________ ______________ are transmitted across cell membrane

Answer 7

Chemical signals

Question 8

Bind with ligands and change shape

Answer 8

Receptors

Question 9

2 type of receptors

Answer 9

Intracellular receptor and membrane receptor

Question 10

Ligand enter cell to bind to receptor ex: hormones

Answer 10

Intercellular receptor

Question 11

Ligand connect to cell membrane and receptor send something out other side, faster, uses any size and polarity

Answer 11

Membrane receptor

Question 12

Ligand=

Answer 12

Signal

Question 13

Materials move out of cell membrane b/c _______________ _____________

Answer 13

Concentration difference

Question 14

No ATP input from cell

Answer 14

Passive transport

Question 15

What passive transport allow

Answer 15

Molecule to move across cell membrane

Question 16

2 types of passive transport

Answer 16

Diffusion and osmosis

Question 17

Movement of molecules in fluid/gas, from high to low, move by natural motion of particles

Answer 17

Diffusion

Question 18

Movement of water thru semi permeable membrane

Answer 18

Osmosis

Question 19

3 type of solutions

Answer 19

Isotonic, hypertonic, hypotonic

Question 20

Solute concentration out = solute concentration in

Answer 20

Isotonic

Question 21

Water in motion moves at equal rates

Answer 21

Isotonic

Question 22

Solute concentration out > solute concentration in

Answer 22

Hypertonic

Question 23

Solute concentration out < solute concentration in

Answer 23

Hypotonic

Question 24

Water move out to lower concentration and cell shrink

Answer 24

Hypertonic

Question 25

Water move to higher concentration and puff up

Answer 25

Hypotonic

Question 26

Some molecules can only diffuse through ____________ _________________

Answer 26

Transport protein

Question 27

Diffusion thru transport proteins (tunnel for molecule) need a little help

Answer 27

Facilitated diffusion

Question 28

Cells use ___________ to transport materials that can’t ___________ across cell membrane

Answer 28

Energy; diffuse

Question 29

Use ATP input from cell to allow cell to move substance again concentration gradient (go against current)

Answer 29

Active transport

Question 30

Use power by chemical energy (ATP)

Answer 30

Active transport

Question 31

Occur thru transitive protein pump

Answer 31

Active transport

Question 32

Use for cell to maintain homeostasis

Answer 32

Active transport

Question 33

During cell I’m/export large material in vesicles

Answer 33

Endo/exoxytosis

Question 34

Taking material into cell

Answer 34

Endocytosis

Question 35

Expelling material from cell

Answer 35

Exocytosis

Question 36

Type of endocytosis

Answer 36

Phagocytosis