Nucleic Acids and DNA Structure Quiz
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of linkage joins the monosaccharide units in starch?

  • Phosphodiester linkage
  • C1–C6 glycosidic linkage
  • Peptide linkage
  • C1–C4 glycosidic linkage (correct)
  • Which component of starch is water-soluble and constitutes about 15-20% of starch?

  • Cellulose
  • Amylopectin
  • Glycogen
  • Amylose (correct)
  • What is the main storage polysaccharide in plants?

  • Chitin
  • Cellulose
  • Starch (correct)
  • Glycogen
  • Which type of glucose units make up cellulose?

    <p>b-D-glucose units (D)</p> Signup and view all the answers

    What type of glycosidic linkage forms branching in amylopectin?

    <p>C1–C6 glycosidic linkage (C)</p> Signup and view all the answers

    What is the primary structure of a protein?

    <p>The sequence of amino acids in a polypeptide chain (D)</p> Signup and view all the answers

    Which polysaccharide serves as a predominant constituent of the cell wall of plant cells?

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

    Which type of structure results from the folding of the backbone of a polypeptide chain?

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

    What creates different proteins from each other?

    <p>Primary structure differences (C)</p> Signup and view all the answers

    Which type of bonding is responsible for the a-Helix structure of a polypeptide chain?

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

    In which level of protein structure do proteins have one or more polypeptide chains?

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

    Which term describes the shape in which a long polypeptide chain can exist?

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

    What is the primary structure of a nucleic acid?

    <p>Sequence of nucleotides (A)</p> Signup and view all the answers

    Who proposed the double-strand helix structure for DNA?

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

    What type of bonds hold the two nucleic acid chains together in the double helix structure of DNA?

    <p>Hydrogen bonds between pairs of bases (D)</p> Signup and view all the answers

    Which nucleotide forms hydrogen bonds with cytosine in DNA?

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

    What are the three types of RNA molecules mentioned?

    <p>Messenger RNA, transfer RNA, ribosomal RNA (D)</p> Signup and view all the answers

    Where did Har Gobind Khorana obtain his M.Sc. degree from?

    <p>Punjab University in Lahore (C)</p> Signup and view all the answers

    Which type of carbohydrates provide optically active polyhydroxy aldehydes or ketones upon hydrolysis?

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

    What is the most important source of energy for mammals obtained by the digestion of starch?

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

    Why are ten amino acids referred to as essential amino acids?

    <p>They must be provided through diet (C)</p> Signup and view all the answers

    What happens to the secondary or tertiary structure of proteins when there is a change in pH or temperature?

    <p>They get denatured (D)</p> Signup and view all the answers

    Which biomolecules speed up reactions in biosystems and are very specific and selective in their action?

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

    How are vitamins classified based on their solubility?

    <p>Based on their solubility (B)</p> Signup and view all the answers

    What did Dr Khorana share the Nobel Prize for Medicine and Physiology for in 1968?

    <p>Cracking the genetic code (A)</p> Signup and view all the answers

    Why are DNA fingerprints considered unique for each individual?

    <p>Because the sequence of bases on DNA is unique (A)</p> Signup and view all the answers

    In which scenario can DNA fingerprinting be altered?

    <p>Through known treatments (D)</p> Signup and view all the answers

    What is the primary function of DNA according to the text?

    <p>Maintaining identity of different species of organisms (D)</p> Signup and view all the answers

    Which process involves transferring identical DNA strands to daughter cells?

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

    What is responsible for synthesizing proteins in the cell according to the text?

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

    More Like This

    Nucleic Acid Structure Basics
    18 questions
    Nucleic Acids and DNA Structure
    22 questions
    Nucleic Acids and DNA Structure
    13 questions

    Nucleic Acids and DNA Structure

    DauntlessMorningGlory773 avatar
    DauntlessMorningGlory773
    Use Quizgecko on...
    Browser
    Browser