Question

Fill in the blanks:

Lower organisms like yeast respire by___________.

Answer 1

Yeast:

1. Yeast is a unicellular fungus, and it is used to make bread and beer.
2. Yeast respires anaerobically by diffusion.
3. Diffusion is the movement of molecules across the membrane from a region of higher concentration to a lower concentration.
4. In yeast anaerobic respiration takes place; the process of breaking down of food (glucose) in the absence of oxygen and releasing a less amount of energy is known as anaerobic respiration.

Final Answer:

Lower organisms like yeast respire by diffusion.