Functions of Human Life
Organization, Metabolism, Responsiveness, Movement, Development, Reproduction
Cell
Compartment covered by a thin membrane
Metabolism
Sum of all chemical reactions that occur within the body
Anabolism
Small, simple molecules combine to make larger, complex molecules (requires energy)
Catabolism
Larger, complex molecules are broken into smaller, simpler molecules (releases energy)
Energy molecule
ATP
Responsiveness
Ability to sense and react to stimuli
Stimuli
Changes in the environment (percieved through sense)
Movement
Can be for an organism or an individual cell
Development
All the changes the body goes through
Differentiation
Unspecialized cells gain a specific function or job
Growth
Increase in mass of an organism
Reproduction
Process by which new living organisms are produced
Homeostasis
Ability to maintain a consistent internal environment (Steady state, equilibrium)
Set point
Value that normal range fluctuates
Normal range
Set of healthy and stable values for life
Negative feedback
Most feedback mechanisms in body
Positive feedback
Response intensifies or exaggerates original stimulus
