Revision quiz

Yeast is used to make...

• rolls
• cakes
• pizza crust
• all of the above

Yogurt and cheese  can be produced from ___________.

• Bacteria
• Virus
• Protozoa
• Algae

The smallest microorganism on earth is known as  _____________

• a virus
• bacteria
• algae
• fungi

Most microorganisms cannot be seen without a...

• microscope
• magnifying lens
• telescope
• x-ray machine

Antibiotics can fight against viruses and bacteria.

• True

• False

Antibiotics are not useful against viral infections

• False

• True

Which is a true statement?

• All microorganisms are harmful.
• All microorganisms are beneficial.
• Some microorganisms are harmful while others are beneficial.
• Microorganisms are beneficial only to humans.

Decomposers ................................

• Feed on trapped nutrients

• Feed on organic matter

• release trapped nutrients

• release organic matter

All microorganisms are decomposers

• True

• False

In any FOOD WEB, all organisms must be connected with .............................

• the producers

• the decomposers

• the consumers

• the predators