Advertisements
Advertisements
Question
Comment on the following:
Yeast is used in bakeries and breweries.
Advertisements
Solution
Yeast respires anaerobically in the absence of oxygen. It breaks down carbohydrates into simpler products such as ethanol by fermentation. The quality of alcohol produced varies with the kind of yeast employed.
During the baking process, yeast added to the dough ferments sugar and produces carbon dioxide. This causes the dough to rise, and when baked, the gas bubbles expand, giving the bread light and spongy texture. Therefore, yeast is used in bakeries and breweries.
RELATED QUESTIONS
Which one of the following characteristics is found in all fungi but not in all bacteria?
Tick (✓) mark the correct statement/statements.
(a) All mushrooms are poisonous.
(b) All toadstools are poisonous.
(c) Some toadstools are poisonous.
(d) Some mushrooms are edible.
Where can you find the mould Rhizopus most easily found?
If you leave a piece of moist bread covered under a small bell jar at a warm place, mould grows on it in a few days. Answer the following with reference to this observation:
What would happen if moist bread was placed in a refrigerator?
If you leave a piece of moist bread covered under a small bell jar at a warm place, mould grows on it in a few days. Answer the following with reference to this observation:
What appears first on the bread-the mycelia or the spores?
Comment on the following:
Denitrifying bacteria are a blessing as well as a curse to farmers.
Give the name of the
mould that causes Aspergillosis in human beings.
Give the name of the
mould that causes lung mycosis.
How are fungi important as food?
Are fungi useful in medical sciences? How?
