Gapfilling Quiz

Fill in all the gaps by dragging the words in the top bar to their correct places.
Correct answers will appear in green and incorrect answers will appear in red.
lncorrect answers may be corrected by dragging the correct word to its place in the paragraph.

   disease      multiply      probiotics      shapes      toxins      typhoid   
Bacteria are single celled organisms that come in many and sizes.
They are living cells that can rapidly.
Once inside the body, they release which are extremely harmful to humans and cause .
Some of these bacteria are food poisoning, cholera, and whooping cough.
Some bacteria are completely harmless to humans whereas others are extremely useful to us such as found in yoghurt.