Proteins: Structure and Function Quiz
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Questions and Answers

What is the significance of proteins in living systems?

  • They are only found in certain parts of the cell and have limited functions.
  • They are the most abundant inorganic molecules.
  • They are primarily responsible for energy production in cells.
  • They make up about 50% of the cellular dry weight and are essential for the structure and function of life. (correct)

Where do proteins occur in the cell?

  • Exclusively in the cytoplasm
  • Only in the nucleus
  • Mainly in the cell wall
  • In every part of the cell (correct)

What do proteins form the fundamental basis of in living systems?

  • Cellular waste removal
  • Energy production
  • Cellular structure and function (correct)
  • Genetic material

What is the term protein derived from?

<p>Greek word proteios, meaning first place (C)</p> Signup and view all the answers

How are secondary proteins characterized?

<p>Alpha helix or Beta plated sheets (C)</p> Signup and view all the answers

What types of bonds are present in tertiary protein structure?

<p>Inter disulfide bond, Inter hydrogen bonds, Hydrophobic forces, Ionic bonds (B)</p> Signup and view all the answers

What did G.J.Mulder find proteins could do when heated?

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

On what basis are proteins classified?

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

Which functional group is acidic in nature in amino acids?

<p>Carboxyl group (-COOH) (A)</p> Signup and view all the answers

Which amino acids are classified as aliphatic amino acids?

<p>Valine, leucine, isoleucine (C)</p> Signup and view all the answers

Which type of amino acid cannot be synthesized in the body and must be obtained from the diet?

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

Which group is present in acidic amino acids such as aspartic acid and glutamic acid?

<p>Carboxyl group (-COOH) (C)</p> Signup and view all the answers

Which category of amino acids contains tryptophan and histidine?

<p>Aromatic amino acids (A)</p> Signup and view all the answers

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