Cell Transportation Flashcards Preview

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Flashcards in Cell Transportation Deck (31):
1

This is the organelle that regulates what enters and exits the cell.

Cell membrane

2

This model means the membrane is composed of many pieces, is thin and flexible...able to "flow".

Fluid Mosaic Model

3

Property of the membrane that makes it "picky" about what moves across...some things go easily, others not so much.

Selectively permeable

4

This is the main component of the cell membrane.

Phospholipid bi-layer

5

The heads of the bi-layer are...

hydrophilic

6

The tails of the bi-layer are...

hydrophobic

7

Hydrophobic tails to this to water.

repel it (fears water)

8

Hydrophilic heads to this to water.

attract it (loves water)

9

This component of the cell membrane has the function of moving materials across the membrane that cannot pass through the lipid bi-layer.

transportation PROTEINS :)

10

This component of the the membrane keeps the membrane fluid...prevents it from becoming a solid.

cholesterol

11

These add extra support to the inside of the membrane...helping to prevent it from caving in.

microfilaments

12

These are attached to either lipids or proteins and will act as cell identification and security.

carbohydrates

13

This is "cellular velcro", it provides space between different types of cells and helps similar cells stick together.

Extracellular Matrix (ECM)

14

The amount of a substance in a given area

concentration

15

When the concentration is different on each side of the membrane.

gradient

16

When the concentration on both sides of the membrane is balanced

equilibrium

17

Movement across the membrane that does NOT require energy. "Go with the flow"

passive transportation

18

The movement of a substance from an area of high concentration to an area of low concentration until equilibrium is reached.

simple diffusion

19

The diffusion of water

Osmosis

20

When the solutes are balanced and water will move in and out equally.

Isotonic solution

21

When the concentration of solutes is greater inside the cell than outside. Water will move IN.

Hypotonic solution

22

When the concentration of solutes is greater outside the cell than inside. Water will move OUT.

Hypertonic solution

23

Moving materials across the membrane that are either large, oddly shaped, or have a charge with the help of specialized proteins. Glucose uses this method.

Facilitated Diffusion

24

Channels that usually stay open and allow materials to flow through. Water uses an aquaporin.

Ion Channel

25

This is movement of materials across the membrane that requires energy...moves against the flow, no equilibrium.

Active transportation

26

Active transportation is based on this.

What the cell needs.

27

This form of transportation will force 3 Na+ ions out of the cell and pull 2 K+ ions in...with the help of ATP.

Sodium-Potassium pump

28

This is the process of bringing materials into the cell.

Endocytosis

29

This is bringing in large particles, such as food. "Cellular eating"

Phagocytosis

30

This is bringing in liquids. "Cellular drinking"

Pinocytosis

31

This is removing materials from the cell, such as waste or proteins to be sent somewhere in the body.

Exocytosis