Introduction to Cells
18 Questions
0 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

Which scientists formally articulated the concept of cell theory in 1839?

  • Louis Pasteur
  • Robert Hooke
  • Schleiden and Schwann (correct)
  • Anton van Leeuwenhoek
  • According to the seven major components of cell theory, what is the fundamental unit of structure and function in all living organisms?

  • Cell (correct)
  • Tissue
  • Atom
  • Molecule
  • What is a key limitation of the cell theory as stated in the text?

  • Presence of DNA in prokaryotic cells
  • Structure of viruses (correct)
  • Inability to explain the origin of life
  • Lack of membrane-bound organelles
  • According to the cell theory, where is DNA specifically found in cells?

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

    What does the cell theory propose about metabolism (energy flow) in cells?

    <p>It occurs within cells</p> Signup and view all the answers

    Which statement best describes the origin of new living cells according to cell theory?

    <p>By division from pre-existing cells</p> Signup and view all the answers

    Which aspect of cell theory is contradicted by the existence of prokaryotic cells?

    <p>Presence of well-defined nucleus in every cell</p> Signup and view all the answers

    How do tapetal cells challenge the traditional understanding derived from the cell theory?

    <p>By being multinucleate</p> Signup and view all the answers

    What is a notable characteristic of human Red Blood Cells according to the discussion about limitations of the cell theory?

    <p>They lack nuclei</p> Signup and view all the answers

    According to Schleiden and Schwann, what was considered the functional unit of the body in living organisms?

    <p>A cell with a well-defined nucleus</p> Signup and view all the answers

    How do viruses challenge the concept of the functional unit in living organisms proposed by Schleiden and Schwann?

    <p>Viruses only 'come alive' when hosted by other cells</p> Signup and view all the answers

    What aspect of the origin of the first cell is not addressed by the cell theory?

    <p>How and where the first cell originated</p> Signup and view all the answers

    What stains lightly and contains active DNA?

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

    Which structure is involved in detoxification in liver cells?

    <p>Rough endoplasmic reticulum</p> Signup and view all the answers

    Where does oxidative phosphorylation occur during aerobic respiration?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What cellular structure increases surface area for absorption or secretion of substances?

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

    Which organelle forms polysomes or polyribosomes?

    <p>Endoplasmic reticulum</p> Signup and view all the answers

    What organelle is responsible for processing enzymes and proteins to be secreted from the cell?

    <p>Golgi apparatus</p> Signup and view all the answers

    More Like This

    Cell Biology and Cell Theory
    11 questions

    Cell Biology and Cell Theory

    SelfDeterminationFauvism avatar
    SelfDeterminationFauvism
    Biology: Cells and Cell Theory
    16 questions
    Cell Theory and Types of Cells
    37 questions

    Cell Theory and Types of Cells

    RightfulImpressionism avatar
    RightfulImpressionism
    Biology Chapter on Cell Theory and Types
    37 questions
    Use Quizgecko on...
    Browser
    Browser