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MCAT Biological and Biochemical Foundations of Living Systems Flashcards: 1d Metabolic Regulation Hormonal Integration

Study 1d Metabolic Regulation Hormonal Integration 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

Which hormone state favors hepatic PFK-2 activity over FBPase-2 activity?

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ANSWER

Fed state (high insulin). High insulin dephosphorylates the bifunctional enzyme, favoring PFK-2 to promote glycolysis in nutrient abundance.

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MCAT Biological and Biochemical Foundations of Living Systems: Foundational Concept 1: Biomolecules and Metabolism

You are hereMetabolic Regulation and Hormonal Integration (1D)24 cards

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This deck focuses on 1d Metabolic Regulation Hormonal Integration, 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 50Practice questions for this set
In a crossover study, 12 healthy adults completed two 90-minute sessions after an overnight fast. In one session they received a continuous infusion of insulin (target plasma insulin 60 0 0pM) with euglycemic clamp (plasma glucose maintained at 5.0±0.2 mM5.0\pm0.2\,\text{mM}). In the other session they received saline. A microdialysis probe sampled interstitial fluid from vastus lateralis, and muscle biopsies were assayed for glycogen content. At 90 minutes, insulin increased whole-body glucose infusion rate required to maintain euglycemia, while plasma free fatty acids fell from 0.550.55 to 0.18 mM0.18\,\text{mM}. Which outcome is most consistent with insulin s integrated action on skeletal muscle metabolism during the clamp?
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