Master the Basics of Amino Acids
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Questions and Answers

Which of the following best describes the properties of amino acids at pH = 7?

  • Amino acids have a net negative charge at pH = 7.
  • Amino acids have both a positive and negative charge at pH = 7.
  • Amino acids have no net charge at pH = 7. (correct)
  • Amino acids have a net positive charge at pH = 7.

What is the source of nitrogen for amino acids in plants?

  • Nitrogen is obtained from the soil.
  • Nitrogen is obtained from animals.
  • Nitrogen is obtained from the atmosphere. (correct)
  • Nitrogen is obtained from other plants.

Which of the following is true about the nitrogen cycle?

  • Nitrates and ammonium ions are converted into N2 gas.
  • Animals convert nitrogen into usable organic forms.
  • Bacteria in roots of legumes convert nitrogen into amino acids. (correct)
  • Plants convert nitrogen into usable organic forms.

What is the term for amino acids that cannot be synthesized by the body and must be obtained from the diet?

<p>Essential amino acids (D)</p> Signup and view all the answers

Which of the following are examples of essential amino acids?

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

What is the term for amino acids that have a branched side chain?

<p>Branch chain amino acids (B)</p> Signup and view all the answers

Which of the following best describes the general properties of amino acids at pH = 7?

<p>Amino acids have no net charge at pH = 7. (A)</p> Signup and view all the answers

What happens to the nitrogen in amino acids after animals ingest plants?

<p>The nitrogen is released back into the soil and atmosphere. (D)</p> Signup and view all the answers

What is the term for amino acids that can be synthesized by the body?

<p>Non-essential amino acids (B)</p> Signup and view all the answers

What is the primary function of amino acids in animals?

<p>Structural component of cells (A)</p> Signup and view all the answers

Which one of these amino acids is considered a branched chain amino acid (BCAA)?

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

Which one of these amino acids is not considered an essential amino acid (EAA)?

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

Which one of these amino acids is not usually considered a complete protein?

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

Which one of these amino acids is considered a limiting amino acid in wheat?

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

Which one of these amino acids is considered a limiting amino acid in corn?

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

Which one of these amino acids is considered a limiting amino acid in beans?

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

Which one of these amino acids is considered a limiting amino acid in soy?

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

Which one of these amino acids is considered a limiting amino acid in quinoa?

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

Which one of these amino acids is considered an essential amino acid (EAA) in infants but not in adults?

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

Which one of these is not a product that can be made from the release of nitrogen (N) during catabolism of amino acids?

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

Which of the following best describes the properties of amino acids at pH = 7?

<p>Amino acids have no net charge across N- and C-terminals. (D)</p> Signup and view all the answers

What is the term for amino acids that have a branched side chain?

<p>Branched chain amino acids (BCAA) (C)</p> Signup and view all the answers

What is the term for amino acids that can be synthesized by the body?

<p>Non-essential amino acids (B)</p> Signup and view all the answers

What is the term for amino acids that cannot be synthesized by the body and must be obtained from the diet?

<p>Essential amino acids (C)</p> Signup and view all the answers

What is the primary function of amino acids in animals?

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

Which one of these amino acids is considered an essential amino acid (EAA) in infants but not in adults?

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

Which one of these amino acids is considered a limiting amino acid in corn?

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

Which one of these amino acids is considered a limiting amino acid in beans?

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

Which one of these amino acids is considered a limiting amino acid in wheat?

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

Which one of these amino acids is considered a limiting amino acid in quinoa?

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

Which one of these amino acids is considered an essential amino acid (EAA) in infants but not in adults?

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

What is the term for amino acids that cannot be synthesized by the body and must be obtained from the diet?

<p>Essential amino acids (C)</p> Signup and view all the answers

Which one of these amino acids is considered a limiting amino acid in beans?

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

What is the primary function of amino acids in animals?

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

Which one of these amino acids is considered a limiting amino acid in corn?

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

What is the source of nitrogen for amino acids in plants?

<p>Atmospheric nitrogen (D)</p> Signup and view all the answers

Which one of these is not a product that can be made from the release of nitrogen (N) during catabolism of amino acids?

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

Which of the following are examples of essential amino acids?

<p>Lysine, Methionine, Phenylalanine (A)</p> Signup and view all the answers

Which one of these amino acids is considered a limiting amino acid in soy?

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

Which one of these amino acids is considered a branched chain amino acid (BCAA)?

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

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