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Amino Acids and Proteins

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Questions and Answers

What is the characteristic element of proteins?

Hydrogen

Oxygen

Nitrogen (correct)

Carbon

How many commonly occurring amino acids are there?

20 (correct)

What does the term 'alpha amino acids' refer to?

Amino acids with the amino group attached to the same carbon atom as the carboxyl group (correct)

Amino acids with a three-letter abbreviation

Amino acids with an imino group

Amino acids with a one-letter abbreviation

Which element is a minor constituent of proteins?

Sulfur Signup and view all the answers

How much of the total dry body weight is made up of proteins?

Three quarters Signup and view all the answers

Which type of amino acid group does not contain proline?

Heterocyclic Signup and view all the answers

Which amino acid is not found in proteins?

Ornithine Signup and view all the answers

Which type of amino acid group includes Phenylalanine, Tyrosine, and Tryptophan?

Aromatic Signup and view all the answers

Which amino acid type comprises Valine, Leucine, and Isoleucine?

Aliphatic Signup and view all the answers

Which amino acid type is known for its OH-Pro and OH-Lys variations found in proteins?

Hydroxy containing Signup and view all the answers