HOW MAY WE KEEP FOODS FROM SPOILING? 347 



out of the applications of the facts you have learned and the 

 demonstrations you have seen. For this unit they are as follows : 



1. We need a variety of foods. 



2. Foods come from plants, animals, and inorganic matter. 



3. Foods are used for growth, energy, and regulation of the 

 bodily activities. 



4. Vitamins are essential to life. 



5. Milk is the one best food. 



6. Bacteria cause foods to spoil. 



7. Refrigeration, drying, preserving, and cooking protects foods. 



Before making your review summary, test your knowledge of 

 the facts of the unit by checking over the text so as to be sure 

 you know the facts underlying the generalizations. Then, using 

 the generalizations, the material in the text, and everything you 

 have read, seen, or done yourself, make a summary outline for 

 your notebook. This outline you may use when you make a 

 recitation. 



TEST ON FUNDAMENTAL CONCEPTS 



Make two vertical columns in your workbook. Head one CORRECT and 

 the other INCORRECT. Under the first place the numbers of all statements 

 you believe to be correct. Under the other place all the numbers of the 

 statements you believe to be incorrect. Your grade = right answers X 2. 



I. Organic foods are necessary for plants and animals because : 



(1) living matter contains the same chemical substances as foods; 



(2) they grow and some foods are needed for growth ; (3) living 

 things do work and some foods are oxidized to release energy; 

 (4) they need mineral salts ; (5) when a plant wilts it needs organic 

 food. 



II. Green plants: (6) are the food producers of the living 

 world ; (7) make food only when in the sunlight ; (8) do not use 

 the foods which they manufacture ; (9) get the energy to do their 

 work from the sun ; (10) utilize the wastes from animals in making 

 organic foods. 



III. A varied diet is necessary in order: (11) to get a variety 

 of food; (12) that we will not tire of food; (13) to get vitamins, 

 minerals, and all the foods which help to build and regulate the 

 body; (14) to keep enough of the different kinds of food on the 

 earth ; (15) to give us necessary growth foods. 



IV. Proteins must be a part of the daily dietary because they : 

 (16) make us strong; (17) contain much iron; (18) contain the 

 necessary materials for body growth ; (19) give us the best supply 

 of vitamins ; (20) release more energy than other foods. 



