Organisms And Life Processes

Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition, Control

The energy organisms must obtain, through food

Plants use photosynthesis, creating their own food for energy Defined as autotrophic

Carbon dioxide + Water —> Glucose + Oxygen Sunlight is needed for this process

Animals consume other living organisms for energy Break down larger complex molecules into simpler molecules through digestion

Enzymes are proteins that act as biological catalysts

A chemical which speeds up a reaction without it being used itself

The Nucleus Genes—> proteins(enzymes)—> Catalyze reactions

Carry out reactions in cells as body temp is too low to carry them out without a catalyst

Its substrate

Active site

Substrate enters active site. Reaction takes place. Products formed which leave active site.

Higher temperatures give the enzyme and substrate more energy, so they collide more often. More collisions mean the reaction will take place more frequently.

Concentration of enzyme or the substrate Temperature pH

Enzymes start to denature, Changing the shape of the active site, substrate no longer able to fit. Denaturing is permanent

pH inside cells are usually neutral and most enzymes have adapted to work best at that pH

Oxygen + Glucose —>Carbon Dioxide + Water

By breaking down food molecules to release the stored chemical energy

ATP

Contraction of muscles cells, producing the movement Active transport of molecules and ions Building large molecules, such as proteins Cell division

Aerobic and anaerobic respiration

Adenosine triphosphate

Using a chemical, ATP

ADP (adenosine diphosphate) + Phosphate