What are the elements that make up carbohydrates? - Carbon, hydrogen and oxygen, What are the elements that make up fats? - Carbon, hydrogen and oxygen, What are the elements that make up proteins? - Carbon, hydrogen, oxygen and nitrogen, What are the three main groups of carbohydrates? - Single sugars, double sugars and complex carbohydrates, What are two examples of single sugars? - Glucose, fructose, What are two examples of double sugars? - Sucrose, maltose, What are three examples of complex carbohydrates? - Cellulose, starch and glycogen, What is the purpose of a Benedict's test? - To test for the presence of reducing sugars, What is the purpose of the Biuret test? - To test for the presence of proteins, What is the purpose of the ethanol-emulsion test? - To test for the presence of fats, What is the purpose of the iodine solution test? - To test for the presence of starch, Why does the Benedict's test not test for sucrose? - Sucrose is a non-reducing sugar, What are the basic building blocks of carbohydrates? - Single sugars (e.g., glucose), What are the basic building blocks of fats (triglyceride)? - Fatty acids and glycerol, What are the basic building blocks of proteins? - Amino acids, What are the positive and negative results for a Benedict's test? - Positive: green/yellow/orange/brick-red ppt formed in blue solution; negative: solution remains blue, What are the positive and negative results for a biuret test? - Positive: solution turns from blue to violet; negative: solution remains blue, What are the positive and negative results for an iodine solution test? - Positive: iodine turns from yellow-brown to blue-black; negative: iodine remains yellow-brown, What are the positive and negative results for an ethanol-emulsion test? - Positive: white emulsion formed; negative: mixture remains clear,

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