Cell Biology Quiz
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Questions and Answers

Which structure is responsible for controlling the movement of substances into and out of a cell?

  • Cytoplasm
  • Ribosome
  • Nucleus
  • Cell membrane (correct)
  • What is the primary function of a mitochondrion in a cell?

  • Protein synthesis
  • ATP production (correct)
  • Cell division
  • DNA replication
  • What is the primary role of ribosomes within a cell?

  • Protein synthesis (correct)
  • Waste disposal
  • Lipid storage
  • Energy production
  • In which part of the cell does the Krebs cycle occur?

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

    Which statement best describes the structure of DNA?

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

    Study Notes

    Cell Membrane

    • Controls the movement of substances into and out of a cell
    • Acts as a barrier, selectively allowing certain molecules to pass through

    Mitochondria

    • Primary function is to generate energy for the cell
    • Responsible for cellular respiration, converting nutrients into ATP (adenosine triphosphate)

    Ribosomes

    • Responsible for protein synthesis
    • Read genetic instructions from messenger RNA (mRNA) to assemble amino acids into proteins

    Krebs Cycle

    • Occurs within the mitochondria of a cell
    • Part of cellular respiration, breaking down glucose and producing energy

    DNA Structure

    • Composed of two long strands of nucleotides, twisted into a double helix
    • Each nucleotide consists of a sugar (deoxyribose), a phosphate group, and a nitrogenous base (adenine, thymine, guanine, or cytosine)
    • The two strands are held together by hydrogen bonds between the nitrogenous bases, with adenine pairing with thymine and guanine pairing with cytosine.

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    Description

    Test your knowledge on key cell structures and their functions with this quiz. Questions cover mitochondria, cell membranes, ribosomes, and the Krebs cycle. Perfect for students studying cell biology.

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