2.36 anaerobic respiration

2.35 aerobic respiration

2.34 anaerobic and aerobic respiration

2.33 respiration

the energy is contained in "food molecules"
The energy is released by "enzyme systems" in the "cytoplasm"
used for growth, sensitivity, cell division
All living things respire
Respiration takes place inside the cell
This is true in both animal and plant cells

Key words

hypo-tonic solution: the fluid around the cell is dilute
hyper-tonic: the fluid around the cell is concentrated
isotonic: the surrounding fluid is equal in concentration to the contents of the cell
wilted:he plant has lost too much water and the cells are not turgid therefore it bends over due to lack of support

2.15 factors affecting rate of movement:

concentration gradient:
lower concentration of inside and higher concentration on outside= more oppertunity for diffusion
higher concentration gradient - e.g 10:1 is better than say 2:5


surface area to volume:
-smaller the cell
-bigger the SA:V ratio
-faster rate of movement

bigger the cell
-smaller SA:V ration
slower rate movement


temperature:
 higher temp=higher kinetic energy
substances are more likely to collide with the cell than if there was a
lower temp=lower kinetic energy
less chance to collide with the cell

2.14 Turgid

when the volume of the cell increases due to water intake, the outwards pressure on the cell wall provides a structure so that the cell can remain upright