Cellular Respiration

process by which cell breaks down food to release the energy stored there

RAW MATERIALS:

• Sugar (glucose)
• Oxygen

PRODUCTS:

• Water
• Carbon dioxide
• Releases energy (ATP)

STAGE ONE

• glucose broken down
• in cytoplasm
• no oxygen involved
• releases little energy
• glycolysi

STAGE TWO

• glucose broken down more
• in mitochondria
• releases lots of energy
• H2O & CO2 - waste

Respiration Equation

Respiration & Photosynthesis

Raw Materials of Respiration are Products of Photosynthesis

Create a Cycle

• keeps levels of oxygen and carbon dioxide fairly constant on Earth

Fermentation

process by which cells break down food to release energy without using oxygen

amount of energy is much less than from respiration

TYPES

• Alcoholic Fermentation
• Lactic Acid Fermentation

Alcoholic Fermentation
performed by yeast
produces: alcohol, CO2, & a little energy

Lactic Acid Fermentation
occurs when muscles run out of oxygen but still need energy