Which contains more reducing sugars, potato or onion juice-How do you know?

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?