Cellular Transport

Question 1

Cell Membrane (5)

Answer 1

Lipid bilayer
carbohydrate molecule
protein transporter
Cholesterol
Phospholipid molecule

Question 2

Passive processes

Answer 2

Depends on pressure, concentration differences, and the kinetic energy of the particles (when moving randomly in liquids and gases)

Question 3

Simple Diffusion (3)

Answer 3

-Particles move down a concentration gradient, the particles move from high area to low area until both areas are equal.

• If the kinetic energy of the particles is increased diffusion will occur faster. This can be done by
  
  • Tempreture increase
  • concentration gradient difference is greater
  • particles are smaller

-Occurs through the cell membrane if the membrane is permeable to the particles e.g. O, CO2, steroids, fat-soluble vitamins, and uria.

Question 4

Osmosis

Answer 4

• Movement of water through a semi-permeable membrane, concentration gradient (high to low, until both is equal)
• Solution with a high concentration of dissolved solutes has a lower water concentration. A solution with a low concentration of dissolved particles has a higher water concentration.
• important process in the human body

Question 5

Filtration

Answer 5

Water moves from an area of high pressure to an area of low pressure. The water may carry dissolved substances.

Question 6

Active processes methods (2)

Answer 6

ACTIVE TRANSPORT

BULK TRANSPORT

Question 7

Active transport

Answer 7

Protein structures in the cell membrane called “pumps”, Use ATP to push small particles across the cell membrane against the concentration gradient.

Question 8

Bulk Transport

Answer 8

Involves the movement of large substances, or larger quantities of substances, through the membrane BY…
ENDOCYTOSIS
EXOCYTOSIS

Question 9

Endocytosis

Answer 9

a process whereby large molecules or whole cells or droplets of liquid are ingested by the cell. The two types are PHAGOCYTOSIS and PINOCYTOSIS

Question 10

Phagocytosis

Answer 10

the process of “cell eating”. The cell extends its membrane around the particles it is going to ingest, which are then taken into the cell with its enclosing membrane.

Question 11

Pinocytosis

Answer 11

Process of “cell drinking”. The cell ingests tiny droplets of fluid by forming a pocket into which the fluid flows.