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MCAT Biological and Biochemical Foundations of Living Systems Flashcards: 2a Endocytosis Exocytosis Vesicular Traffic

Study 2a Endocytosis Exocytosis Vesicular Traffic in MCAT Biological and Biochemical Foundations of Living Systems with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is the function of adaptin (AP) complexes in clathrin-mediated endocytosis?

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ANSWER

Link cargo receptors to clathrin by binding sorting motifs in cytosolic tails. Adaptins recognize specific motifs on receptor tails, bridging them to clathrin to ensure selective cargo incorporation into forming vesicles.

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MCAT Biological and Biochemical Foundations of Living Systems: Foundational Concept 2: Cells and Cellular Organization

You are hereEndocytosis, Exocytosis, and Vesicular Trafficking (2A)24 cards

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This deck focuses on 2a Endocytosis Exocytosis Vesicular Traffic, giving you a quick way to review the definitions, rules, and examples that matter most for MCAT Biological and Biochemical Foundations of Living Systems.

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Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 45Practice questions for this set
In a single-cell assay, cells internalize transferrin (Tf) via receptor-mediated endocytosis. After 10 minutes, most fluorescent Tf is in early endosomes; after 30 minutes, Tf signal returns to the plasma membrane while the transferrin receptor remains detectable at the surface. A mutation disrupts a small GTPase required for endosomal sorting, and Tf remains trapped in intracellular vesicles with reduced return to the surface. Which process is most likely affected by the mutation described?
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