Urgent help needed (1 Viewer)

Pepperpie

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Hi I need help with my assignment cause I was away on half of this stuff when the teacher explained it. This is a first hand investigation to gather information and use available evidence to identify the following substances in tissues:

~Glucose
~Starch
~Proteins
 

madharris

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– Glucose Test:
Place 4 ml of sample in a test tube
Add 4 ml of Benedict’s solution
Heat gently in a water bath
If the solution turns orange-brown, there is glucose present

– Starch Test:
Place sample in a test tube
Add 5 drops of iodine solution
If the iodine turns purple, there is starch present


– Protein Test:
Place 4 ml of sample in a test tube
Add 5 ml of sodium hydroxide and 5 drops of copper sulfate (this is called the Biuret solution)
If the solution becomes light purple, there is protein present
 

Pepperpie

Member
Joined
Jan 26, 2013
Messages
48
Gender
Female
HSC
2015
– Glucose Test:
Place 4 ml of sample in a test tube
Add 4 ml of Benedict’s solution
Heat gently in a water bath
If the solution turns orange-brown, there is glucose present

– Starch Test:
Place sample in a test tube
Add 5 drops of iodine solution
If the iodine turns purple, there is starch present


– Protein Test:
Place 4 ml of sample in a test tube
Add 5 ml of sodium hydroxide and 5 drops of copper sulfate (this is called the Biuret solution)
If the solution becomes light purple, there is protein present
Thank you so much for the help, it saved me!! :D
 

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