What is the one-letter code for Alanine?	A
Which amino acid is represented by the one-letter code A?	Alanine
What is the three-letter code for Alanine?	Ala
What is the biochemical classification of the Alanine side chain?	Nonpolar, aliphatic
Is Alanine considered a nutritionally essential or non-essential amino acid in adult humans?	Non-essential
What is the one-letter code for Arginine?	R
Which amino acid is represented by the one-letter code R?	Arginine
What is the three-letter code for Arginine?	Arg
What is the biochemical classification of the Arginine side chain?	Positively charged (basic)
What is the one-letter code for Asparagine?	N
Which amino acid is represented by the one-letter code N?	Asparagine
What is the three-letter code for Asparagine?	Asn
What is the biochemical classification of the Asparagine side chain?	Polar uncharged
What is the one-letter code for Aspartate (Aspartic acid)?	D
Which amino acid is represented by the one-letter code D?	Aspartate (Aspartic acid)
What is the three-letter code for Aspartate (Aspartic acid)?	Asp
What is the biochemical classification of the Aspartate side chain?	Negatively charged (acidic)
What is the one-letter code for Cysteine?	C
Which amino acid is represented by the one-letter code C?	Cysteine
What is the three-letter code for Cysteine?	Cys
What is the biochemical classification of the Cysteine side chain?	Polar uncharged
What is the one-letter code for Glutamate (Glutamic acid)?	E
Which amino acid is represented by the one-letter code E?	Glutamate (Glutamic acid)
What is the three-letter code for Glutamate (Glutamic acid)?	Glu
What is the biochemical classification of the Glutamate side chain?	Negatively charged (acidic)
What is the one-letter code for Glutamine?	Q
Which amino acid is represented by the one-letter code Q?	Glutamine
What is the three-letter code for Glutamine?	Gln
What is the biochemical classification of the Glutamine side chain?	Polar uncharged
What is the one-letter code for Glycine?	G
Which amino acid is represented by the one-letter code G?	Glycine
What is the three-letter code for Glycine?	Gly
What is the biochemical classification of the Glycine side chain?	Nonpolar, aliphatic
What is the one-letter code for Histidine?	H
Which amino acid is represented by the one-letter code H?	Histidine
What is the three-letter code for Histidine?	His
What is the biochemical classification of the Histidine side chain?	Positively charged (basic)
Is Histidine an essential amino acid in adult humans?	Yes
What is the one-letter code for Isoleucine?	I
Which amino acid is represented by the one-letter code I?	Isoleucine
What is the three-letter code for Isoleucine?	Ile
What is the biochemical classification of the Isoleucine side chain?	Nonpolar, aliphatic
Is Isoleucine an essential amino acid in adult humans?	Yes
What is the one-letter code for Leucine?	L
Which amino acid is represented by the one-letter code L?	Leucine
What is the three-letter code for Leucine?	Leu
What is the biochemical classification of the Leucine side chain?	Nonpolar, aliphatic
Is Leucine an essential amino acid in adult humans?	Yes
What is the one-letter code for Lysine?	K
Which amino acid is represented by the one-letter code K?	Lysine
What is the three-letter code for Lysine?	Lys
What is the biochemical classification of the Lysine side chain?	Positively charged (basic)
Is Lysine an essential amino acid in adult humans?	Yes
What is the one-letter code for Methionine?	M
Which amino acid is represented by the one-letter code M?	Methionine
What is the three-letter code for Methionine?	Met
What is the biochemical classification of the Methionine side chain?	Nonpolar, aliphatic
Is Methionine an essential amino acid in adult humans?	Yes
What is the one-letter code for Phenylalanine?	F
Which amino acid is represented by the one-letter code F?	Phenylalanine
What is the three-letter code for Phenylalanine?	Phe
What is the biochemical classification of the Phenylalanine side chain?	Aromatic (nonpolar)
Is Phenylalanine an essential amino acid in adult humans?	Yes
What is the one-letter code for Proline?	P
Which amino acid is represented by the one-letter code P?	Proline
What is the three-letter code for Proline?	Pro
What is the biochemical classification of the Proline side chain?	Nonpolar, aliphatic (cyclic)
What is the one-letter code for Serine?	S
Which amino acid is represented by the one-letter code S?	Serine
What is the three-letter code for Serine?	Ser
What is the biochemical classification of the Serine side chain?	Polar uncharged
What is the one-letter code for Threonine?	T
Which amino acid is represented by the one-letter code T?	Threonine
What is the three-letter code for Threonine?	Thr
What is the biochemical classification of the Threonine side chain?	Polar uncharged
Is Threonine an essential amino acid in adult humans?	Yes
What is the one-letter code for Tryptophan?	W
Which amino acid is represented by the one-letter code W?	Tryptophan
What is the three-letter code for Tryptophan?	Trp
What is the biochemical classification of the Tryptophan side chain?	Aromatic
Is Tryptophan an essential amino acid in adult humans?	Yes
What is the one-letter code for Tyrosine?	Y
Which amino acid is represented by the one-letter code Y?	Tyrosine
What is the three-letter code for Tyrosine?	Tyr
What is the biochemical classification of the Tyrosine side chain?	Aromatic (polar)
Is Tyrosine an essential amino acid in adult humans?	No
What is the one-letter code for Valine?	V
Which amino acid is represented by the one-letter code V?	Valine
What is the three-letter code for Valine?	Val
What is the biochemical classification of the Valine side chain?	Nonpolar, aliphatic
Is Valine an essential amino acid in adult humans?	Yes
The branched-chain essential amino acids are _____, Leucine, and Isoleucine.	Valine
The branched-chain essential amino acids are Valine, _____, and Isoleucine.	Leucine
The branched-chain essential amino acids are Valine, Leucine, and _____.	Isoleucine
The sulfur-containing standard amino acids are _____ and Cysteine.	Methionine
The sulfur-containing standard amino acids are Methionine and _____.	Cysteine
The three standard amino acids with aromatic rings in their side chains are _____, Tyrosine, and Tryptophan.	Phenylalanine
The three standard amino acids with aromatic rings in their side chains are Phenylalanine, _____, and Tryptophan.	Tyrosine
The three standard amino acids with aromatic rings in their side chains are Phenylalanine, Tyrosine, and _____.	Tryptophan
The three standard amino acids classed as basic (positively charged side chains; histidine only partly at pH 7) are _____, Arginine, and Histidine.	Lysine
The three standard amino acids classed as basic (positively charged side chains; histidine only partly at pH 7) are Lysine, _____, and Histidine.	Arginine
The three standard amino acids classed as basic (positively charged side chains; histidine only partly at pH 7) are Lysine, Arginine, and _____.	Histidine
The two standard amino acids with negatively charged (acidic) carboxylate side chains at neutral pH are _____ and Glutamate.	Aspartate
The two standard amino acids with negatively charged (acidic) carboxylate side chains at neutral pH are Aspartate and _____.	Glutamate
Among the aromatic amino acids, only _____ and Tryptophan are nutritionally essential, whereas tyrosine is non-essential.	Phenylalanine
Among the aromatic amino acids, only Phenylalanine and _____ are nutritionally essential, whereas tyrosine is non-essential.	Tryptophan