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Questions and Answers
What structural characteristics define an L-amino acid?
What structural characteristics define an L-amino acid?
- A large R-group attached to the central carbon.
- A carboxyl group on the left side of the structure.
- An amine group on the left side of the structure. (correct)
- An amine group on the right side of the structure.
If a molecule contains fewer than 50 amino acids, it is referred to as what?
If a molecule contains fewer than 50 amino acids, it is referred to as what?
- A protein.
- An enzyme.
- A peptide. (correct)
- A polysaccharide.
What type of ion are amino acids typically in?
What type of ion are amino acids typically in?
- A zwitterion. (correct)
- An anion.
- A complex ion.
- A cation.
What is the direct product of the reaction when the C-terminus and N-terminus meet?
What is the direct product of the reaction when the C-terminus and N-terminus meet?
Which of the following components is a defining characteristic of all amino acids?
Which of the following components is a defining characteristic of all amino acids?
Which of the following amino acids is classified as aromatic?
Which of the following amino acids is classified as aromatic?
What main role does the 'R' group play in the structure of a protein?
What main role does the 'R' group play in the structure of a protein?
Which amino acid contains a thioether functional group?
Which amino acid contains a thioether functional group?
Which of the following is a neutral amino acid with an aliphatic alcohol group?
Which of the following is a neutral amino acid with an aliphatic alcohol group?
How many aliphatic amino acids are there, as indicated?
How many aliphatic amino acids are there, as indicated?
Which amino acid contains a Thiol group in its structure?
Which amino acid contains a Thiol group in its structure?
Which two amino acids contain an amide group?
Which two amino acids contain an amide group?
What structural feature do nonpolar amino acids typically have?
What structural feature do nonpolar amino acids typically have?
Which characteristic best describes alkanes?
Which characteristic best describes alkanes?
How would you best classify Glycine, Alanine, Valine, Leucine, Isoleucine, and Proline?
How would you best classify Glycine, Alanine, Valine, Leucine, Isoleucine, and Proline?
What is the significance of the R-group in amino acids?
What is the significance of the R-group in amino acids?
What chemical group is formed when the C-terminus of one amino acid reacts with the N-terminus of another?
What chemical group is formed when the C-terminus of one amino acid reacts with the N-terminus of another?
If a protein has more than 50 amino acids, how is it classified?
If a protein has more than 50 amino acids, how is it classified?
Which amino acids are classified under an aromatic category?
Which amino acids are classified under an aromatic category?
What group is attached to neutral amino acids?
What group is attached to neutral amino acids?
Flashcards
Amino Acid Components
Amino Acid Components
Amino acids contain an amine group and a carboxylic acid group.
Amino Acids as Zwitterions
Amino Acids as Zwitterions
Amino acids typically exist as zwitterions.
Residue Definition
Residue Definition
A residue is a single unit, or a simplified element.
Role of the R-Group
Role of the R-Group
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L-Amino Acid Structure
L-Amino Acid Structure
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Amide Group Formation
Amide Group Formation
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Peptide vs. Protein
Peptide vs. Protein
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Nonpolar Amino Acid Subgroups
Nonpolar Amino Acid Subgroups
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Aliphatic Amino Acids
Aliphatic Amino Acids
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Aromatic Amino Acids
Aromatic Amino Acids
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Thioether Amino Acid
Thioether Amino Acid
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Neutral Amino Acids (Aliphatic Alcohols)
Neutral Amino Acids (Aliphatic Alcohols)
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Phenol Amino Acid
Phenol Amino Acid
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Thiol Amino Acid
Thiol Amino Acid
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Amide Amino Acids
Amide Amino Acids
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Study Notes
- Thursday 31 2025
- Chapter 101
- Amino acids have an amine group and a carboxylic acid group
- Amines are bases
- AA: Typically exist in zwitterion form
- Single unit- Residue
- Residue is the simplest unit
- R group: Controls structure and function for protein
- L-amino acids: L means Amine on the left.
- Which also means N terminus
- Carbosylin acid on the right
- Which also means C terminus
- When C and N terminus meet, they make an Amide Group
- You call it peptide because it contains < 50 AA and is less
- Protein is when you have > 50 AA which is more.
- Identifies our functional groups
- Non polar (CAA)
- Polar ()
- Acid
- Basic
- Complete
- 20 AA to memorize
- Total
- Nonpolar have three groups into them
- Aliphatic: (6) Gly, Ala, Val, Leu, Ile, Pro
- Alkanes (Carbon w/ single bond)
- Aromatic: (2) Phe, TRP
- Thir ether: (1) Met
- Neutral: is 6
- Alkane Attached to OH
- Aliphatic alcohol: Ser, THR (2)
- Phenol Cys (1)
- Thiol Tyr (1)
- Amide: Asn, Gln (2)
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