Amino Acids Classification Basics
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Questions and Answers

Which classification system categorizes amino acids based on whether they carry a positive or negative charge?

  • Nutritional classification
  • Chemical classification (correct)
  • Structural classification
  • Metabolic classification

Which amino acid is classified as a 'basic' amino acid due to carrying a positive charge?

  • Valine
  • Cysteine
  • Methionine
  • Histidine (correct)

In the general structure of amino acids, what does 'R' represent?

  • Reactive group
  • Radical group (correct)
  • Regenerative chain
  • Ribose chain

How many essential amino acids are there according to the nutritional classification?

<p>8 (B)</p> Signup and view all the answers

What distinguishes essential amino acids from non-essential amino acids?

<p>Non-essential amino acids are synthesized in the body. (B)</p> Signup and view all the answers

Which classification of amino acids is based on whether they are glucogenic, ketogenic, or a mix of both?

<p>Metabolic classification (D)</p> Signup and view all the answers

Which of the following statements about proteins is NOT true?

<p>Proteins are always composed of an equal number of amino acids. (B)</p> Signup and view all the answers

Which of the following amino acids is classified as a pure ketogenic amino acid?

<p>Leucine (C)</p> Signup and view all the answers

What is the general structure of a peptide bond that connects amino acids in a protein?

<p>-CO-NH- (D)</p> Signup and view all the answers

Which of the following amino acids is classified as a mixed glucogenic and ketogenic amino acid?

<p>Tyrosine (A)</p> Signup and view all the answers

What is the classification of amino acids based on their metabolic fate?

<p>Ketogenic, glucogenic, and mixed (D)</p> Signup and view all the answers

Which of the following amino acids is classified as a pure glucogenic amino acid?

<p>Aspartic acid (A)</p> Signup and view all the answers

Which of the following statements about the general structure of amino acids is correct?

<p>Amino acids have a central carbon atom bonded to an amino group, a carboxyl group, and a variable side chain. (C)</p> Signup and view all the answers

Which of the following is the correct chemical classification of amino acids based on their side chains?

<p>Aromatic, aliphatic, basic, and acidic. (C)</p> Signup and view all the answers

Which of the following statements about the nutritional classification of amino acids is correct?

<p>Essential amino acids are those that cannot be synthesized by the human body, while non-essential amino acids can be synthesized. (B)</p> Signup and view all the answers

Which of the following statements about the metabolic classification of amino acids is correct?

<p>Both glucogenic and ketogenic amino acids can be converted to glucose and ketone bodies, respectively. (A)</p> Signup and view all the answers

Which of the following statements about the definition of proteins is correct?

<p>Proteins are macromolecules composed of amino acids linked by peptide bonds. (B)</p> Signup and view all the answers

Which of the following statements about the general structure of proteins is correct?

<p>Proteins can have a linear, globular, or fibrous structure, depending on their specific amino acid sequence. (A)</p> Signup and view all the answers

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