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PORTAGE LEARNING CHEM 210 - MODULE 3 EXAM
PORTAGE LEARNING CHEM 210 - MODULE 3 
EXAM.True or False: The amino acids serine and threonine both contain sulfur atoms. 
FALSE 
True or False: The following secondary structure shown below is an example of a betaturn. 
FALSE 
True or False. The side chain of phenylalanine is bonded to the backbone nitrogen 
atom. 
FALSE 
True or False: The name of the molecule that binds to an enzyme is called the 
holoenzyme. 
FALSE 
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PORTAGE LEARNING CHEM 210 - MODULE 6 EXAM
PORTAGE LEARNING CHEM 210 - 
MODULE 6 EXAM.In RNA, guanine always pairs with . 
Thymine 
Guanine 
Cytosine 
Uracil 
Both A and B 
CYSTOSINE 
DNA is built from which of the following? 
Nucleosides 
Genes 
Purines 
Nucleotide 
Codons 
NUCLEOTIDE 
The Z-form helix of DNA is stabilized mainly by . 
Ionic bonds 
Covalent bonds 
Hydrogen bonds 
Ion-dipole bonds 
Hydrogen covalent bonds 
HYDROGEN BONDS 
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