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Microbiology: Cell Structure and Endosymbiotic Theory

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이 집합의 용어 (17)

  • Which is larger: eukaryotes or prokaryotes?

    Eukaryotes are larger than prokaryotes.

  • Do eukaryotes have a nucleus?

    Yes, eukaryotes have a nucleus.

  • Do prokaryotes have a nucleus?

    No, prokaryotes do not have a nucleus.

  • Do eukaryotes have membrane-bound organelles?

    Yes, eukaryotes contain membrane-bound organelles.

  • Do prokaryotes have membrane-bound organelles?

    No, prokaryotes lack membrane-bound organelles.

  • What ribosomes do eukaryotic cells have?

    Eukaryotic cells have 80S ribosomes.

  • What ribosomes do prokaryotic cells have?

    Prokaryotic cells have 70S ribosomes.

  • Do eukaryotic membranes often contain sterols?

    Yes, eukaryotic membranes often contain sterols.

  • Do prokaryotic membranes usually contain sterols?

    No, prokaryotic membranes usually lack sterols.

  • How do eukaryotic cells divide?

    Eukaryotic cells divide by mitosis or meiosis.

  • How do prokaryotic cells divide?

    Prokaryotic cells divide by binary fission.

  • What does the endosymbiotic theory explain?

    The endosymbiotic theory explains how eukaryotic cells evolved.

  • Which organelles were once free-living bacteria according to endosymbiotic theory?

    Mitochondria and chloroplasts were once free-living bacteria.

  • Name one piece of evidence supporting the endosymbiotic theory.

    These organelles have their own DNA.

  • Name another piece of evidence supporting the endosymbiotic theory.

    They contain 70S ribosomes similar to bacteria.

  • What evidence shows mitochondria and chloroplasts divide like bacteria?

    They divide by binary fission.

  • What membrane feature supports the endosymbiotic theory?

    They have double membranes.