Identifying Macromolecules

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Presentation transcript:

Identifying Macromolecules

DO NOW Get out your Macromolecules HW & Macromolecules Structure Label Turn in your Macromolecules Concept Map Different organisms store glucose in various forms. You discover an unidentified specimen. Upon chemical analysis you find that it is made of significant amounts of STARCH. Which of the following organisms is this new species probably closely related? A. Potato B. Mushroom C. Dog D. Maple Tree

Simple Sugars: Monosaccharides

Indicator: Benedict’s Solution

Steps of Use Add drops of Benedicts Place test tube in hot water bath Observe color change

Positive Test: Turns Green to Red

Negative Test: Remains Blue

Complex Sugars: Polysaccharides

Indicator: Iodine

Steps of Use Add drops of Iodine Observe color change

Positive Test: Turns Black

Negative Test: Remains Yellow

WARNING! Can stain clothes and skin

Lipids

Indicator: Brown Paper Bag or Towel

Steps of Use Add drops of unknown to paper bag or towel Let dry Look for a grease spot

Positive Test: Grease Spot

Negative Test: Normal Paper Towel/Bag

Proteins

Indicator: Biuret’s

Steps of Use Add drops of Biuret’s Observe color change

Positive Test: Turns Purple

Negative Test: Remains Blue

WARNING Corrosive and poisonous. DO NOT SWALLOW!