Carbohydrates

ID #2371

I am having trouble figuring out which statment is incorrect and why. Could you please be of assitance? Identify if each of the following statements is True or False. True: Condensation forms covalent bonds between molecules. True: The monomer of a protein is an amino acid. False: 5 water molecules are removed when bringing together 5 molecules of glucose. False: Condensation reactions are reactions that break apart macromolecules by releasing water.


Let's go through these one by one.
True: Condensation forms covalent bonds between molecules.
This is the definition of a condensation reaction - for example, if you have two molecules R1-OH and R2-OH, you can synthesize a macromolecule: R1-O-R2 and H20.  
True: The monomer of a protein is an amino acid.
This is also true - one amino acid is the monomer, and proteins are the macromolecule assembled from them.
False: 5 water molecules are removed when bringing together 5 molecules of glucose.
This is an example of the condensation reaction listed above.  However, you only remove 4 molecules of water from linking the 5 molecules of glucose together. 
False: Condensation reactions are reactions that break apart macromolecules by releasing water.
The statement above describes a mix of condensation and hydrolysis, so it's not correct for either.  These processes are described in the lecture notes but also on page 37 on the Raven text.
Condensation is building a larger molecule and releasing water.
Hydrolysis is breaking apart a macromolecule using water.   
 

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