Showing posts with the label Microorganisms: Friend and FoeShow all
Microorganisms : Friend And Foe
Exercises 1. Fill in the blanks. (a) Microorganisms can be seen with the help of a microscope . (b) Blue green algae fix nitrogen directly from air and enhance fertility of soil. (c) Alcohol is produced with the help of yeasts . (d) Cholera is caused by bacteria . 2. Tick the correct answer. (a) Yeast is used in the production of (i) sugar (ii) alcohol (iii) hydrochloric acid (iv) oxygen (b) The following is an antibiotic (i) Sodium bicarbona…
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