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Questions and Answers
How many amino acids are coded by DNA to appear in proteins?
How many amino acids are coded by DNA to appear in proteins?
- 50 amino acids
- 10 amino acids
- 20 amino acids (correct)
- 100 amino acids
What determines the properties of proteins?
What determines the properties of proteins?
- The sequence of amino acids (correct)
- The type of DNA
- The location of proteins
- The number of amino acids
What is the net charge of an amino acid in its dipolar (zwitterion) form?
What is the net charge of an amino acid in its dipolar (zwitterion) form?
- Neutral (0) (correct)
- Negative (-)
- Variable
- Positive (+)
To which atom are all the substituents in an amino acid attached?
To which atom are all the substituents in an amino acid attached?
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What are the basic structural units of proteins?
What are the basic structural units of proteins?
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Study Notes
Amino Acids and Proteins
- 20 amino acids are coded by DNA to appear in proteins
- The properties of proteins are determined by their unique sequence of amino acids
- The net charge of an amino acid in its dipolar (zwitterion) form is zero, as it has both a positive and a negative charge
- In an amino acid, all the substituents are attached to the central alpha carbon atom
- The basic structural units of proteins are amino acids
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