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Cell Biology: Prokaryotic vs Eukaryotic Cells
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Cell Biology: Prokaryotic vs Eukaryotic Cells

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Questions and Answers

What is a significant characteristic that distinguishes eukaryotic cells from prokaryotic cells?

  • Eukaryotic cells use binary fission for reproduction.
  • Eukaryotic cells have a true nucleus that contains chromosomes. (correct)
  • Eukaryotic cells do not contain ribosomes.
  • Eukaryotic cells are always single-celled organisms.
  • Which statement accurately describes a feature of prokaryotic cells?

  • Prokaryotic cells have multiple membrane-bound organelles.
  • Prokaryotic cells reproduce exclusively through meiosis.
  • Prokaryotic cells have complex cellular structures and functions.
  • Prokaryotic cells contain DNA in a nucleoid region. (correct)
  • Which of the following statements is true regarding all cells?

  • All cells have a defined nucleus.
  • All cells contain ribosomes. (correct)
  • All cells reproduce through binary fission.
  • All cells are capable of photosynthesis.
  • What type of DNA structure is typically found in eukaryotic cells?

    <p>Double-stranded linear DNA</p> Signup and view all the answers

    What describes the cytosol found within cells?

    <p>It is the semi-fluid substance where organelles are located.</p> Signup and view all the answers

    Which of the following statements about ribosomes in prokaryotes is correct?

    <p>Prokaryotic ribosomes consist of 30 S and 50 S subunits.</p> Signup and view all the answers

    Which of the following is NOT a basic component of prokaryotic cytoplasm?

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

    What role do granules or inclusions play in bacteria?

    <p>They serve as a means of storing nutrients.</p> Signup and view all the answers

    How does the plasma membrane of prokaryotes differ from that of eukaryotes?

    <p>Prokaryotic membranes lack sterols, except in mycoplasma.</p> Signup and view all the answers

    Which type of prokaryote is known to thrive in extreme environments?

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

    What is the primary function of flagella in prokaryotes?

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

    What is the primary function of flagella in prokaryotes?

    <p>To facilitate movement in aquatic environments</p> Signup and view all the answers

    Which of the following best describes the role of the rough endoplasmic reticulum (RER)?

    <p>Secretion of proteins and glycoproteins</p> Signup and view all the answers

    What structure is involved in the exchange of genetic information between bacteria?

    <p>F-pilus</p> Signup and view all the answers

    Which type of endocytosis involves the specific uptake of molecules through receptor-ligand interactions?

    <p>Receptor-mediated endocytosis</p> Signup and view all the answers

    What key characteristic distinguishes the inner membrane of mitochondria?

    <p>It has infoldings called cristae</p> Signup and view all the answers

    What is the primary function of the lipid bilayer in prokaryotes?

    <p>Serve as a semipermeable membrane</p> Signup and view all the answers

    Which amino acid form is primarily used in the synthesis of peptidoglycan?

    <p>D form</p> Signup and view all the answers

    What component provides rigid support while allowing permeability in the bacterial cell wall?

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

    What are the two primary components of the backbone of peptidoglycan?

    <p>N-acetylglucosamine and N-acetylmuramic acid</p> Signup and view all the answers

    What is a common effect of mutations in the haploid DNA of prokaryotes?

    <p>Quicker adaptation to environmental changes</p> Signup and view all the answers

    What additional layer can some bacteria possess outside of their cell wall?

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

    Which characteristic of the glycocalyx assists bacteria in adhering to surfaces?

    <p>It can be a slime layer or capsule</p> Signup and view all the answers

    Which type of bacteria typically has a thick peptidoglycan layer?

    <p>Gram-positive</p> Signup and view all the answers

    What does the presence of plasmids in prokaryotic cells primarily confer?

    <p>Antibiotic resistance</p> Signup and view all the answers

    What is the role of inter-peptide bridges in peptidoglycan?

    <p>They link NAG and NAM strands</p> Signup and view all the answers

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