Lesson 6
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What is Glucose?
Sugar Basic building blocks of more complex carbohydrates
What is Sucrose?
Sugar formed by binding two glucose molecules
What is Starch?
Complex carbohydrates made of many glucose molecules bonded together
Bond Formation Order:
Glucose-> Sucrose-> Starch
Bond Breakage Order:
Starch-> Sucrose-> Glucose
Where can Starch be stored in?
Leaves, Bulbs or roots
What are some example of foods that are rich in Starch
Rice Potato Pasta
What is the purpose of Glucose?
Aerobic Cellular Respiration
What is the purpose of Sucrose?
Transported in plant by Phloem
What is the purpose of Starch?
Stored for later use
What is a use of Starch
At night, when there is no light energy & no Photosynthesis, Starch helps maintain Glucose levels.
What does the Phloem transport?
Sucrose
How to test for Starch?
Iodine Test
In the Iodine Test, why do you boil the plant in water?
To kill the cell, no chloroplast, no colour
In the Iodine Test, why do you put the plant in warm ethanol?
From crunchy->Floppy
If the Iodine solution goes from yellow to black, is Starch present?
Yes