different types of cells, osmosis, diffusion adn active transport

HideShow resource information
  • Created by: malu
  • Created on: 08-11-13 20:17
Preview of Cells

First 222 words of the document:

All living organisms are made up of cells. We can only see them using a microscope.
LIGHT MICROSCOPE- an instrument used to magnify specimens using lenses and light, e.g.
in school whereas electron microscope uses a beam of electrons
Animal cell Plant cell
Nucleus In plant cell it also contains nucleus, cytoplasm
Controls all activities of cells and cell membrane. It have same functions as a
Contains information for making new cell or animal cell
Cytoplasm (liquid gel) Cell wall
Most of the chemical reactions takes place Made of cellulose which strengthens cell
RESPIRATION- IMP and gives it support
Cell membrane Chloroplasts (found in green plants)
Controls the passage of substances in and It contains green substance chlorophyll
out of the cell which gives the plant its colour. They
absorb light energy to make food by
Mitochondria Permanent vacuole
Structures in the cytoplasm where oxygen is A space in cytoplasm filled with sap
used and energy is released during (solution containing sugar and other
respiration substances)
Ribosomes Keeps cell rigid to support the plant
Where protein synthesis takes place
Protein needed in the cells are made here

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Chemical reaction in cell
Cell chemistry always works because it is controlled by an enzyme. Each enzyme is a
protein which controls the rate of specific reaction; it makes sure that the reaction takes
place without becoming mixed up with any other reaction.…read more

Page 3

Preview of page 3

Here's a taster:

They are in the light sensitive layer of your cells (retina).
Outer segment- They make it possible for you to see in colours
contains visual
3 main adaptations:
Outer segment is filled with a special chemical called
visual pigment; this change chemically in coloured
Middle segment- light and has to be changed back to its original form.
many This uses lots of energy
Middle segment is full of mitochondria, they produce
lots of energy.…read more

Page 4

Preview of page 4

Here's a taster:

The net movement of particles It is a special case of diffusion, where only TRANSPORT
of gas or solute from an area of water moves across a partially permeable
high concentration to low membrane The movement
concentration.…read more


No comments have yet been made

Similar Science resources:

See all Science resources »See all resources »