Cells and movements across membranes

• Cell membrane controls substances entering and leaving the cell
• Cyptoplasm is where chemical reactions take place
• Nucleaus is where genetic information is stored
• Cell wall supports plants structures
• Chloroplasts absorb sun light
• Mitochondria is the site of aerobic respiration
• Enzmes are biological catalysts necessary to all organisms
• Emzymes work best at optimum temp but when too hot they denature because active site has changed