ON MILK AND MILK-TESTING II 



What ferments are present in milk? 



1. Organized (Bacteria). 



2. Unorganized (Galactase). 



What is the difference between an organized and 

 an unorganized ferment? 



An organized ferment is due to the action of bac- 

 teria and has the power of reproducing itself. 



An unorganized ferment or enzyme is formed by 

 the action of glandular tissue and has not the power 

 of reproducing itself, although its action may not 

 be destroyed after performing its function. As an 

 example of this we have rennet, which does not los»e 

 its power after coagulating milk. 



What are bacteria? 



They are the lowest forms of microscopical plant 

 life, and are composed of protoplasm. 



What are spores? 



A spore is the breeding cell of a bacterium. All 

 bacteria do not form spores, many reproducing by 

 a process known as " fission," the cell simply divid- 

 ing into two or more parts or bacteria. 



What are the three necessities for bacterial growth? 



1. Suitable food. 



2. Moisture. 



3. A proper temperature. 



What bacteria are commonly found in milk? 



I. Those that sour milk, called lactic acid bac- 

 teria. 



