Metabolism
All chemical reactions occurring inside a cell or organism
Cells need energy to:
Be organized
Maintain themselves (homeostasis)
Grow & reproduce
Respond
Adapt
Get more energy
Energy
The ability to do work
Kinetic Energy - Movement
Potential Energy - Stored
Solar (light) Energy - Ultraviolet radiation from the sun
Chemical Energy - Store in the chemical bonds between atoms
Laws of Thermodynamics
Law 1 - Conservation of Matter
The amount of energy in the universe is constant, energy can be neither created or
destroyed, but it can be changed from one form to another
Law 2 - Increased Entropy (disorder)
Everything becomes disorganized over time unless energy is added to keep things
organized
To stay alive cells need energy to do work (metabolism)
All chemical reactions occurring inside a cell or organism
Cells need energy to:
Be organized
Maintain themselves (homeostasis)
Grow & reproduce
Respond
Adapt
Get more energy
Energy
The ability to do work
Kinetic Energy - Movement
Potential Energy - Stored
Solar (light) Energy - Ultraviolet radiation from the sun
Chemical Energy - Store in the chemical bonds between atoms
Laws of Thermodynamics
Law 1 - Conservation of Matter
The amount of energy in the universe is constant, energy can be neither created or
destroyed, but it can be changed from one form to another
Law 2 - Increased Entropy (disorder)
Everything becomes disorganized over time unless energy is added to keep things
organized
To stay alive cells need energy to do work (metabolism)
