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Title: Movement in and out of cells : ACTIVE and PASSIVE
Description: These notes cover different transport processes in animal and plant cells, including diffusion, osmosis and active transport. These notes are mainly focused for Biology IGCSE 0610, although may help for other biology courses as well. Happy Learning!
Description: These notes cover different transport processes in animal and plant cells, including diffusion, osmosis and active transport. These notes are mainly focused for Biology IGCSE 0610, although may help for other biology courses as well. Happy Learning!
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Movement in and out of the Cells
Course: Biology IGCSE 0610
Unit 2
2
...
-Factors a ecting rate of di usion:
Particle Size: Greater particle size means slow rate of di usion
Di usion distance: A smaller distance means di usion will be quicker
Permeability: A more permeable surface will allow more di usion
Concentration Gradient: A higher gradient means that di usion will be quicker
Temperature: Higher temperatures allow more di usion
Di usion Medium: Di usion is fastest is slowest in solids but fastest in liquids
-Examples of Di usion in Animal Cells:
Oxygen moves from alveolar air space in lungs to blood
Carbon dioxide moves from blood to alveolar air space in the lungs
Useful food substances move from bloodstream to small intestine
Urea moves from bloodstream to kidney tubules
-Examples of di usion in plant cells:
Carbon dioxide di uses in via stomatal opening
Oxygen di uses out via stomata
Water vapor di uses out through transpiration via stomata
2
...
-Concentrated solution: More solute dissolved than solvent
...
This is is because water potential is higher in a dilute solution
...
However , water will move outside of the plant cell if placed in a concentrated solution
...
In case of an animal cell being placed in a dilute solution, water will till move inside the cell
due to higher water potential outside, but the will burst and become lysed
...
In a concentrated solution, cell will
become shriveled since water will move outside
...
3 Active Transport
-Active Transport: It is deļ¬ned as a process in which particles or ions move from a region of
lower concentration to a region of higher concentration, facilitated by carrier protein
molecules and the energy released by mitochondria
-Examples in Animal Cells:
Reabsorption of glucose by small intestine
Examples in Plant Cells:
Absorption of nutrient ions from soil
I do not own the pictures
...
Title: Movement in and out of cells : ACTIVE and PASSIVE
Description: These notes cover different transport processes in animal and plant cells, including diffusion, osmosis and active transport. These notes are mainly focused for Biology IGCSE 0610, although may help for other biology courses as well. Happy Learning!
Description: These notes cover different transport processes in animal and plant cells, including diffusion, osmosis and active transport. These notes are mainly focused for Biology IGCSE 0610, although may help for other biology courses as well. Happy Learning!