AP BIOLOGY

Detailed explanation-1: -Yeast is a unicellular fungus, extensively used to prepare bread and beer. Yeast respire through respire anaerobically . The breaking down of food particles in absence of oxygen and releasing a little amount of energy is known as anaerobic respiration.

Detailed explanation-2: -Yeasts can undergo both aerobic and anaerobic repsiration. during anaerobic respiration, yeasts produce alcohol. Glucose is broken down into ethanol and carbon dioxide with the release of energy. Lactic acid is produced in muscles when they respire anaerobically.

Detailed explanation-3: -Yeasts are known as facultative anaerobes. Facultative anaerobes can survive in both aerobic and anaerobic conditions.

Detailed explanation-4: -yeast, multicellular neried, protozoans bacteria are some organisms that respire through anaerobic respiration.