Biology Lab 3

One whose molecules contain carbon in the form of chains or rings

Does not contain carbon arranged in chains or rings

chains of smaller molecules that make up the 4 organic compounds

Monomers put together and formed by dehydration synthesis

The loss of a water molecule between each pair of monomers

• If the compound turns black after heated over a flame, then the compound is organic.
• Sugar and meat are organic
• Table salt and baking soda are inorganic

Sugars that consist of 2 monosaccharides linked together

• when mono. and di. have the ability to add electrons to reduce other molecules
• Have free carbonyl groups in close proximity to hydroxyl groups

Mixed the test material with 2 ml of benedict's reagent. When heated, if the material stays blue, it does not have a reducing sugar in it. If it turns any other color, then it has reducing sugar.

A polysaccharide consisting of many glucose molecules linked together

Mix the test material and 5 drops of Iodine. If the test turns black, then it has starch in it. If the test turns brown, it does not have starch

• Oily or waxy compounds
• Generally insoluble in water but are soluble in organic solvents

3 fatty acids and one glycerol

• Mix veg oil and water...they don't miz (emulsion)
• Add sudan stain, and it merges the oil and water together

Oil and sucrose of a piece of paper...one disappears, and one remains

What polymers are made up of with protein

Miz test material and biuret reagent. If mixture turns violet, there is protein. If mixture turns blue, there is no protein