Proteins: Structure and Function Quiz
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Questions and Answers

What is the primary structure of proteins?

  • Alpha-Helix
  • Beta-Pleated sheets
  • Amino acids in a polypeptide chain (correct)
  • Three-dimensional structure

Which nutrient contains nitrogen and is essential for the body?

  • Carbohydrates
  • Vitamins
  • Fats
  • Proteins (correct)

What happens if there is a lack of essential amino acids in the diet?

  • Positive nitrogen balance
  • Negative nitrogen balance (correct)
  • Normal protein synthesis
  • Increased storage of amino acids

Where does the absorption of amino acids primarily occur?

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

What is the main function of deamination in protein metabolism?

<p>Removal of amino group from amino acids (D)</p> Signup and view all the answers

What is the first step in the process of gluconeogenesis?

<p>Conversion of amino group from ammonia to urea (A)</p> Signup and view all the answers

How is the amount of protein required for normal physiological functioning calculated?

<p>By calculating the intake of nitrogen in protein (C)</p> Signup and view all the answers

What determines whether a patient is in positive nitrogen balance?

<p>Protein intake exceeding output (D)</p> Signup and view all the answers

Which process involves the transfer of an amino group from one amino acid to a suitable carbon skeleton?

<p>Transamination of nonessential amino acids (B)</p> Signup and view all the answers

In a patient with a negative nitrogen balance, what does this indicate?

<p>Low protein intake with high output (A)</p> Signup and view all the answers

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