AP®︎ Biology: Topic 2.9 Flashcards

Master key terms and definitions for Topic 2.9 of AP Biology – Cell Compartmentalization to help you prep for quizzes and the AP exam.


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Term

Membrane-Bound Organelles

Definition

Specialized eukaryotic structures enclosed by membranes that isolate specific metabolic processes and reactions.

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Membrane-Bound Organelles
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Specialized eukaryotic structures enclosed by membranes that isolate specific metabolic processes and reactions.

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Rough ER and Smooth ER
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Rough ER synthesizes and folds proteins; smooth ER makes lipids, detoxifies, and stores calcium.

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Golgi Apparatus
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Stack of membrane sacs that modifies, sorts, and packages molecules into vesicles.

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Lysosome
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Acidic membrane-bound sac containing hydrolytic enzymes that digest macromolecules and worn-out cell parts.

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Mitochondrion
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Double-membraned organelle that carries out cellular respiration and produces most cellular ATP.

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Cristae
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Folds of the inner mitochondrial membrane that increase surface area for ATP-producing reactions.

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Peroxisome
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Membrane-bound organelle that breaks down fatty acids and detoxifies harmful compounds using oxidative enzymes.

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Vacuole
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Membrane-bound storage compartment for water, ions, nutrients, and wastes; large in many plant cells.

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Protein Localization in Membranes
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Placement of specific enzymes, receptors, and transport proteins in particular membranes for specialized functions.

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Eukaryotes vs. Prokaryotes in Compartmentalization
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Eukaryotes use membrane-bound organelles to separate functions; prokaryotes lack most internal membrane compartments.

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Cell Compartmentalization
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Organization of eukaryotic cells into membrane-bound compartments that separate reactions and increase surface area.

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Nucleus
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Double-membraned organelle with pores that stores DNA and separates transcription from translation.

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Chloroplast
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Double-membraned plant organelle whose internal membranes carry out photosynthesis and increase reaction surface area.

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