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Biology 2 > Cell Membrane 3.3-3.5 > Flashcards

Cell Membrane 3.3-3.5 Flashcards

1
Q

Cell membrane has 2 _____________________ layers

A

Phospholipid

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2
Q

Cell membrane is a

A

Boundary

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3
Q

Cell membrane is ____________________ aka let some things pass

A

Semi permeable

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4
Q

Cell membrane is __________________ permeable

A

Selectively

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5
Q

What is the cell membrane selectively permeable about

A

Size and polarity

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6
Q

What other molecules are in the membrane

A

Protein and protein channels

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7
Q

_____________ ______________ are transmitted across cell membrane

A

Chemical signals

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8
Q

Bind with ligands and change shape

A

Receptors

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9
Q

2 type of receptors

A

Intracellular receptor and membrane receptor

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10
Q

Ligand enter cell to bind to receptor ex: hormones

A

Intercellular receptor

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11
Q

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

A

Membrane receptor

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12
Q

Ligand=

A

Signal

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13
Q

Materials move out of cell membrane b/c _______________ _____________

A

Concentration difference

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14
Q

No ATP input from cell

A

Passive transport

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15
Q

What passive transport allow

A

Molecule to move across cell membrane

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16
Q

2 types of passive transport

A

Diffusion and osmosis

17
Q

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

18
Q

Movement of water thru semi permeable membrane

19
Q

3 type of solutions

A

Isotonic, hypertonic, hypotonic

20
Q

Solute concentration out = solute concentration in

21
Q

Water in motion moves at equal rates

22
Q

Solute concentration out > solute concentration in

A

Hypertonic

23
Q

Solute concentration out < solute concentration in

24
Q

Water move out to lower concentration and cell shrink

A

Hypertonic

25
Q

Water move to higher concentration and puff up

26
Q

Some molecules can only diffuse through ____________ _________________

A

Transport protein

27
Q

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

A

Facilitated diffusion

28
Q

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

A

Energy; diffuse

29
Q

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

A

Active transport

30
Q

Use power by chemical energy (ATP)

A

Active transport

31
Q

Occur thru transitive protein pump

A

Active transport

32
Q

Use for cell to maintain homeostasis

A

Active transport

33
Q

During cell I’m/export large material in vesicles

A

Endo/exoxytosis

34
Q

Taking material into cell

A

Endocytosis

35
Q

Expelling material from cell

A

Exocytosis

36
Q

Type of endocytosis

A

Phagocytosis

Biology 2 (17 decks)

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