Biology
BIOLOGICALLY IMPORTANT MOLECULES LAB
Bio 121
Introduction: There are 4 categories of organic compounds found in living
organisms: Carbohydrates, Proteins, Lipids & Nucleic Acids. Each of these
macromolecules is made of smaller subunits. These subunits are linked by dehydration
synthesis, which is an energy-requiring process in which a molecule of water is removed
and the two subunits are covalently bonded. View the following video for an introduction
to these biomolecules. https://www.youtube.com/watch?v=QWf2jcznLsY&t=24s
Which of the solutions is a positive control for the reducing sugar test? A negative
control?
Which of the solutions is a positive control for the starch test? A negative control?
Which is a reducing sugar, sucrose or glucose? How do you know?
Which contains more reducing sugars, potato or onion juice? How do you know?
Which contains more starch, potato or onion juice? How do you know?
What does this tell you about how sugars are stored in onions and potatoes?
What are the functions of carbohydrates in living organisms?
