Showing posts with the label Chapter 2Show 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…
Social Plugin