AP®BiologyCollege BoardExam QuestionsUnit 2: Cell Structure & FunctionCell Compartmentalization

Cell Compartmentalization (College Board AP® Biology)

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Cell Compartmentalization

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Cell Compartmentalization

1
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Eukaryotic cells and prokaryotic cells have many similarities and differences. Which of the following best describes prokaryotes?

  • Prokaryotes contain many internal membrane bound organelles.

  • Prokaryotic cells have internal regions with specialized structures and functions.

  • The organelles of prokaryotic cells evolved from once free-living eukaryotic cells via endosymbiosis.

  • Prokaryotic cells contain organelles that were once free-living prokaryotic organisms such as bacteria.

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2
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Endosymbiotic theory dates back over 100 years. It explains organelles in eukaryotic cells that are thought to have evolved from bacteria through endosymbiosis. Which of the following best describes examples of endosymbiotic organelles?

  • Mitochondria, chloroplasts, flagella,

  • Mitochondria, nucleus and flagella

  • Chloroplast, mitochondria, nucleus

  • Mitochondria and chloroplasts

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3
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Membrane-bound organelles help achieve compartmentalization within a cell. Which of the following is not a benefit of having membrane-bound organelles in cells?

  • Allowing the reactions within an organelle to be kept separate from the outside of the organelle.

  • Increasing the internal surface area for reactions.

  • Ensuring all reactions take place within the organelle.

  • Preventing lytic enzymes from catalysing reactions within the cytoplasm.

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