Further Biology - Using Yeast

YEAST is a single-celled FUNGUS

YEAST is a microorganism. A yeast cell has:

• Nucleus
• Cytoplasm
• Vacuole
• Cell Membrane
• Cell Wall

YEAST can respire with or without oxygen.

Equation for anaerobic respiration of glucose by yeast (i.e. FERMENTATION):

GLUCOSE --> ETHANOL + CARBON DIOXIDE + ENERGY

Equation for aerobic respiration of glucose by yeast (producing more energy that yeast needs to grow and reproduce):

GLUCOSE + OXYGEN --> CARBON DIOXIDE + WATER + ENERGY

YEAST can be used to MAKE BREAD

• Yeast is used in dough to…