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AP Biology Flashcards: Feedback

Study Feedback in AP Biology with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What feedback type is involved in the regulation of calcium levels in the blood?

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ANSWER

Negative feedback. PTH and calcitonin maintain proper calcium balance.

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AP Biology: Cell Communication and Cell Cycle

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What this deck covers

This deck focuses on Feedback, giving you a quick way to review the definitions, rules, and examples that matter most for AP Biology.

How to use these flashcards

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 37Practice questions for this set
A growth factor activates a receptor tyrosine kinase (RTK), causing autophosphorylation and recruitment of a MAPK cascade that activates ERK. Active ERK phosphorylates a docking site on the RTK's cytosolic tail, reducing adaptor binding and decreasing further MAPK activation while ligand remains present. Cells expressing an RTK mutant lacking the ERK phosphorylation site show prolonged ERK activity after a brief ligand pulse. Which outcome best explains the effect of this feedback on pathway behavior?
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