Biochemistry: Protein Dr. Micheal Quiz 1
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Questions and Answers

Which of the following is the composition of proteins?

  • Fatty acids
  • Amino acids (correct)
  • Nucleotides
  • Monosaccharides

    • What is not a function of lipids?

  • Shock absorption and thermal insulation
  • Determining different blood groups (correct)
  • Synthesis of lipid soluble vitamins (e.g., vitamin D)
  • Formation of steroidal hormones such as Cortisol and Sex hormones

    • Is protein considered a polymer?

  • True (correct)
  • False

    • Which macromolecule is involved in the synthesis of oxy and deoxy ribose sugars used in building RNA and DNA structure?

    <p>Carbohydrates</p> Signup and view all the answers

    Which protein structure consists of folded proteins and more than one subunit?

    <p>Quaternary structures</p> Signup and view all the answers

    Which of the following is not a branched amino acid?

    <p>Tyrosine</p> Signup and view all the answers

    What type of bond holds amino acids together in a polypeptide chain?

    <p>Peptide bond</p> Signup and view all the answers

    All of the following are the functions of proteins Except

    <p>Formation of steroidal hormones as Cortisol and Sex hormones.</p> Signup and view all the answers

    Coagulated proteins are example for secondary derived proteins:

    <p>False</p> Signup and view all the answers

    What is the primary function of myosin protein?

    <p>Muscle contraction</p> Signup and view all the answers

    Which of the following is an example of a semi-essential amino acid?

    <p>Histidine</p> Signup and view all the answers

    Antibodies can be classified as

    <p>Conjugated proteins</p> Signup and view all the answers

    The primary derived proteins are soluble in water:

    <p>False</p> Signup and view all the answers

    Insulin is an example of:

    <p>Hormonal proteins</p> Signup and view all the answers

    Collagens and elastins are examples for globular proteins:

    <p>False</p> Signup and view all the answers

    All of the following are the functions of carbohydrate Except

    <p>Formation of steroidal hormones as Cortisol and Sex hormones.</p> Signup and view all the answers

    What is the empirical formula for carbohydrates when n = 5?

    <p>C5H10O5</p> Signup and view all the answers

    Which group distinguishes monosaccharides as either polyhydroxyaldehydes or polyhydroxyketones?

    <p>Keto group</p> Signup and view all the answers

    What is the classification of compounds composed of C, H, and O with the empirical formula (CH2O)n?

    <p>Carbohydrates</p> Signup and view all the answers

    Which category of carbohydrates includes trioses, tetroses, pentoses, and hexoses?

    <p>Monosaccharides</p> Signup and view all the answers

    Which sugar is the simplest of the aldoses?

    <p>Glyceraldehyde</p> Signup and view all the answers

    What determines whether a sugar belongs to the D or L series?

    <p>The orientation of the hydroxyl and hydrogen groups</p> Signup and view all the answers

    Which sugar naturally occurs in the L form?

    <p>Arabinose</p> Signup and view all the answers

    What confers optical activity on a compound with asymmetric carbon atoms?

    <p>The presence of an asymmetric carbon atoms</p> Signup and view all the answers

    What produces epimers in monosaccharides?

    <p>Variations in configuration of carbon atoms 2, 3, or 4</p> Signup and view all the answers

    Which monosaccharide is the naturally occurring form of fructose?

    <p>Glucose</p> Signup and view all the answers

    What are epimer carbons related to in monosaccharides?

    <p>-OH and -H groups on carbon atoms 2, 3, or 4</p> Signup and view all the answers

    Which sugar is not classified as an aldose sugar?

    <p>Fructose</p> Signup and view all the answers

    Which compound is attached to 4 different groups and is present in all monosaccharides except dihydroxyacetone?

    <p>-CH2OH group</p> Signup and view all the answers

    "D-glyceraldehyde" is an example of which type of monosaccharide?

    <p>Aldotriose</p> Signup and view all the answers

    What determines whether a sugar belongs to the D or L series?

    <p>Comparison with glycerose (glyceraldehyde).</p> Signup and view all the answers

    Which sugar naturally occurs in the L form and is found in glycoproteins?

    <p>Arabinose</p> Signup and view all the answers

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