Chapter 3- Part 1 Flashcards Preview

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Flashcards in Chapter 3- Part 1 Deck (27):
1

Largest organelle

Nucleus

2

Moves non polar (uncharged) substances passively across lipid portion of membrane

Simple diffusion

3

Consist of cytiosial (ICF) fluid portion,organelles ; small organs

Cytoplasm

4

Contains lower solute concentrations ECF then cytosol - water moves into cell at faster rate causing cell to burst (lyse)

Hypotonic solution

5

2 lipid types phospholipids ; most common & cholesterol strengthens membrane

Lipid type

6

Moves substance from higher to lower concentrations down or with concentration gradient until equilibrium is reached

Passive process

7

Requires energy- moves substances from lower to higher concentrations uphill or against their concentration gradient

Active process

8

Permits some substances to pass through membrane

Selectively permeable

9

Consists of proteins arranged in lipid bilayer (double layer)

Plasma membrane structure

10

Isotonic,hypotonic,hypertonic

Solution types

11

Functions as channels,transporters,carriers and enzymes

Proteins

12

Contains higher solute concentration in ECF then cytosol -water moves out of a cell at faster rating causing cell to crenate (shrink)

Hypertonic solution

13

Cell eating

Phagocytosis

14

Cell drinking

Pinocytosis

15

(Secretoin) transport materials out of cell

Exocytosis

16

Water moves passively from a higher water (lower solute) concentration to a lower water (higher solute) concentration

Osmosis

17

Pumps vesicular transport; transport materials in or out of cell

2 active processes

18

Moves polar charged substances across protein portion of membrane

Facilitated diffusion

19

Permits non polar (uncharged) substances to pass

Lipid bilayer portion

20

2 types, integral proteins extend through entire membrane, peripheral proteins; attach to surface

Protein type

21

Substances cross membrane 2 ways; passively;no energy required;actively;energy required

Transport methods

22

Transport materials into cells 2 types pinocytosis,phagocytosis

Endocytosis

23

Contains equal solute concentration in cytosol (ICF) and ECF water moves into and out of cell at same rate maintaining normal cell shape

Isotonic solution

24

Functional units of living things-vary in shape,size,function

Cells

25

Describes the effect of solute concentration on water movements in and out of cells

Tonicity

26

Seperatelly cells internal and external environment- regulates the movement of materials through cells

Plasma membrane

27

Permits some substances to pass through membrane

Selectively permeable