Cell Transportation

Question 1

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

Answer 1

Cell membrane

Question 2

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

Answer 2

Fluid Mosaic Model

Question 3

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

Answer 3

Selectively permeable

Question 4

This is the main component of the cell membrane.

Answer 4

Phospholipid bi-layer

Question 5

The heads of the bi-layer are…

Answer 5

hydrophilic

Question 6

The tails of the bi-layer are…

Answer 6

hydrophobic

Question 7

Hydrophobic tails to this to water.

Answer 7

repel it (fears water)

Question 8

Hydrophilic heads to this to water.

Answer 8

attract it (loves water)

Question 9

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

Answer 9

transportation PROTEINS :)

Question 10

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

Answer 10

cholesterol

Question 11

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

Answer 11

microfilaments

Question 12

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

Answer 12

carbohydrates

Question 13

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

Answer 13

Extracellular Matrix (ECM)

Question 14

The amount of a substance in a given area

Answer 14

concentration

Question 15

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

Answer 15

gradient

Question 16

When the concentration on both sides of the membrane is balanced

Answer 16

equilibrium

Question 17

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

Answer 17

passive transportation

Question 18

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

Answer 18

simple diffusion

Question 19

The diffusion of water

Answer 19

Osmosis

Question 20

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

Answer 20

Isotonic solution

Question 21

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

Answer 21

Hypotonic solution

Question 22

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

Answer 22

Hypertonic solution

Question 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.

Answer 23

Facilitated Diffusion

Question 24

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

Answer 24

Ion Channel

Question 25

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

Answer 25

Active transportation

Question 26

Active transportation is based on this.

Answer 26

What the cell needs.

Question 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.

Answer 27

Sodium-Potassium pump

Question 28

This is the process of bringing materials into the cell.

Answer 28

Endocytosis

Question 29

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

Answer 29

Phagocytosis

Question 30

This is bringing in liquids. “Cellular drinking”

Answer 30

Pinocytosis

Question 31

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

Answer 31

Exocytosis