Biology

• Most commonly found in plant cells
• protection, support and shape

• lets some things in and/or out of the cell
• acts as a boundary layer to contain the cytoplasm (fluid in cell)

• Structure - sheets of unit membrane with ribosomes on the outside
• - forms a tubular network throughout the cell
• Function - transports chemicals between cells and within cells
• - provides a large surface area for the organization of chemical reactions and synthesis

• - produces turgor pressure against cell wall for support
• - stores water and various chemicals
• - may store insoluble wastes

digests materials

• INside are folded membrane which provides a larger surface area where enzymes for respiration are attached.
• site of cellular respiration ie. the release of chemical energy from food
• Glucose + Oxygen ------> Carbon Dioxide + Water + Energy

Chemically modifies, stores and distributes substances made by the endoplasmic reticulum

site of photosynthesis

chlorophyll Carbon Dioxide + Water ---------------> Glucose + Oxygen radiant energy (food)