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Cells and Osmosis:

Biology GCE O ’ Level Revision program. Cells and Osmosis:

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Page 1: Biology GCE O ’ Level Revision program. Cells and Osmosis:

Cells and Osmosis:

Page 2: Biology GCE O ’ Level Revision program. Cells and Osmosis:

Turgid Plants are erect, while flaccid ones wilt

Page 3: Biology GCE O ’ Level Revision program. Cells and Osmosis:

Animal cell in solutions

Page 4: Biology GCE O ’ Level Revision program. Cells and Osmosis:

“Active Transport”“The movement of particle from an area

of lower concentration to an area of higher concentration by using energy.”

Active transport is involved in a number of processes occurring within an organism

This includes the absorption of: Dissolved mineral salts by the root hairs, Glucose and amino acids by cells in the

small intestine of humans by villiFig. 2.4 Active transport-molecules diffuse against the concentration gradient from B to A.