2.3.3: Active transport

Question 1

define active transport

Answer 1

the movement of molecules/ions through a cell membrane from an area of lower concentration to an area of higher concentration using energy from respiration

Question 2

what are the requirements for active transport

Answer 2

a carrier protein and energy in the form of ATP

Question 3

what are the limiting factors of active transport

Answer 3

number and availability of carrier proteins
anything that limits aerobic respiration, oxygen availability, cyanide - respiratory inhibitor

Question 4

describe how active transport works in terms of concentration gradient and equilibrium

Answer 4

active transport is against the concentration gradient and goes on beyond an equilibrium