C2.2 The Role Of The Cell Membrane In Transport

Question 0

What is the SECOND law in the particle model of matter?

Answer 0

The particle of matter are constantly moving or vibrating; particles move least in solids and most in gases. Adding or taking away energy will affect the movement of particles.

Question 1

What is the first law in the particle model of matter?

Answer 1

All matter is made of particles but the particle in different substances may be different in size and composition.

Question 2

What is the THIRD law of particle model of matter?

Answer 2

The particles of matter are attracted to one another or are bonded together

Question 3

What is the FOURTH law in the particle model of matter?

Answer 3

Particles have spaces between them that are smallest in solids, (expect for ice), and greatest in gases. The spaces may be occupied by the particles of other substances.

Question 4

What is the diffusion?

Answer 4

The nature flow of particles from an area of high concentration to low concentration.

Question 5

When does diffusion occur?

Answer 5

Diffusion occurs with cells some of the matter that flow into and out of cells.

Question 6

Rate of diffusion

Answer 6

We can increase the rate at which particles move by adding energy Ex: stirring or heating

Question 7

What is homeostasis?

Answer 7

The cell attempts to maintain a valence of dilutes inside and outside of the cell

Question 8

Use of Concentration gradient?

Answer 8

• Is solute difference on either side of the barrier

- The concentration gradient will determine which way that matter will flow across the barrier

Question 9

What is passive transport?

Answer 9

The movement of matter will occur naturally, no extra energy is needed

Question 10

What is selector permeable?

Answer 10

The cell membrane is selectively permeable, only certain materials are able to flow into or out of the cell.

Question 11

What is Semi- permeable membranes?

Answer 11

Artificial membranes allow certain items to pass through the membrane based on the size of the molecules.

Question 12

What is osmosis?

Answer 12

Osmosis is the diffusion of water, which water is able to move freely into and out of the cell. The cell is able to adjust to it’s surroundings by transporting water into and out of the cell.

Question 13

What is hypertonic?

Answer 13

The concentration of solutes in solution are higher than in cell. Water will flow out of the cell to create homeostasis.

Question 14

Hypotonic

Answer 14

The concentration of solutes in solution are less than in the cell. Water will flow into the cell to create homeostasis.

Question 15

Turgor

Answer 15

Turgor is pressure created inside the cell because of water inside a plant cell.

Question 16

Isotonic

Answer 16

The concentration of the solutes inside and outside of the cell are equal. There will be little movement of water into and outside of the cell.

Question 17

First rule for facilitated diffusion

Answer 17

Only substances that are soluble in lipids are able to pass through the lipid bilateral through diffusion

Question 18

Second rule for facilitated diffusion

Answer 18

Channel proteins create pores or channels through which materials can be transported across the membrane

Question 19

Third rule for facilitated diffusion

Answer 19

Carrier proteins attach to a larger molecule

Question 20

Fourth rule for facilitated diffusion

Answer 20

The larger the molecule can now be transported across the membrane, the carrier protein changes shape an physically moves the molecule across

Question 21

First rule active transport

Answer 21

Energy is required to transport a molecule against concentration gradient

Question 22

Second rule active transport

Answer 22

Active transport is required to transport nutrients into the cell and wasted out of the cell

Question 23

Third rule for active transport

Answer 23

Carrier proteins work (similar to a pump) against the gradient

Question 24

Fourth rule for active transport

Answer 24

The energy for active transport comes from cellular respiration and ATP

Question 25

First rule of endocytosis

Answer 25

Particles are brought into the cell by the cell creating a food and then the membrane pinches off the around it

Question 26

Second rule for endocytosis

Answer 26

Single celled organisms use endocytosis to squire good particles through endocytosis