Answers

2015-12-10T10:47:33+05:30
ACTIVE TRANSPORT:-The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

PASSIVE TRANSPORT:-
The movement of a chemical substance across a cell membrane without expenditure of energy by the cell, as in diffusion.
0
2015-12-12T11:55:11+05:30
Active transport is the process when the substances are transported from a region of lower concentration to higher concentration.this requires the use of energy rich molecules like ATP

passive transport happens when the substances are transported from a region of higher concentration to lower concentration.it does not acquire any metabolic energy.
0