methods of cell transport

Question 1

what is active transport and name the different methods

Answer 1

particles that move from an area of low concentration to high concentration (does use energy). Different methods are phagocytosis, endocytosis and exocytosis

Question 2

what is passive transport and name the different methods

Answer 2

particles that move from an area of high concentration to low concentration. Methods are simple diffusion, osmosis and facilitated diffusion

Question 3

what is diffusion

Answer 3

The movement of substances across the membrane from high concentration to low. This does not need energy

Question 4

what is facilitated diffusion

Answer 4

Movement of large or charged molecules across the membrane from high concentration to low (with the concentration gradient) with the help of a carrier protein. This does not use energy

Question 5

what is osmosis

Answer 5

The movement of water across a semipermeable membrane from an area of high to low concentration. Does not use energy

Question 6

what is simple diffusion

Answer 6

Movement of molecules across the membrane from an area of high to low concentration. Does not use energy (ATP)

Question 7

what is ATP

Answer 7

Molecule that is used when energy is required
It comes from respiration
It is used in active transport to provide energy molecules to be moved against the concentration gradient
ATP releases energy when broken down to ADP + P