ACT Membranes study plan
ACT Membranes · Give each week a clear focus.
8 weeks · About 6 hours per week
Membrane Structure and Composition & Membrane Bioenergetics
Diagram the fluid mosaic model from memory, labeling lipid classes, integral vs. peripheral proteins, and asymmetry
Compare saturated vs. unsaturated fatty acid effects on bilayer fluidity and phase behavior
Explain how membrane composition (cholesterol, cardiolipin, curvature) supports chemiosmotic energy coupling
Define electrochemical gradient, proton motive force, and membrane potential in writing without notes
Your checkpoint
A one-page hand-drawn membrane schematic plus a 300-word explanation of how lipid composition enables ATP synthesis, self-graded against a checklist
Membrane Bioenergetics & Membrane Structure and Composition
Trace electron flow through the respiratory chain and map each complex to its proton-pumping stoichiometry
Derive ATP yield from a given proton gradient using the chemiosmotic equation
Distinguish substrate-level phosphorylation from oxidative and photophosphorylation with worked examples
Predict effects of uncouplers and ionophores on membrane potential and ATP output
Your checkpoint
Ten quantitative bioenergetics problems solved with shown work, scoring at least 80% on a self-graded answer key
Membrane Transport
Classify transport mechanisms by energetics, saturation kinetics, and directionality
Sketch and interpret Michaelis-Menten-style uptake curves for carriers vs. channels
Calculate flux direction from combined chemical and electrical gradients using the Nernst relation
Explain how the Na+/K+ ATPase establishes gradients that drive secondary transport
Your checkpoint
A comparison table of at least eight transporters covering energy source, stoichiometry, and inhibitor, plus five gradient-direction calculations
Membrane Transport & Membrane Signaling and Receptors
Differentiate channel gating types and predict conductance changes from structural features
Model receptor activation kinetics for ligand-gated vs. enzyme-linked receptors
Explain signal amplification through second-messenger cascades using a specific pathway
Describe how membrane microdomains concentrate or exclude signaling components
Your checkpoint
A written 500-word pathway walkthrough from ligand binding to cellular response, including at least three amplification steps and one regulatory feedback loop
Membrane Signaling and Receptors
Compare GPCR, receptor tyrosine kinase, and ionotropic receptor signaling in a single framework
Predict consequences of receptor mutation or desensitization on downstream output
Interpret dose-response data to distinguish affinity from efficacy
Explain crosstalk between two signaling pathways and where signal termination occurs
Your checkpoint
A timed 20-question problem set on receptor signaling completed in 40 minutes with a written error analysis
Membrane Dynamics and Trafficking
Sequence the steps of vesicular transport from ER to plasma membrane and back
Distinguish COPI, COPII, and clathrin coats by cargo and destination
Explain how SNAREs, Rab GTPases, and tethering proteins confer fusion specificity
Compare endocytic routes and describe membrane recycling balance
Your checkpoint
A labeled flowchart of secretory and endocytic traffic with at least ten annotated steps and one predicted phenotype per disrupted component
Membrane Dynamics and Trafficking & Membrane Structure and Composition
Explain how lipid composition and curvature drive membrane remodeling and fission
Connect membrane dynamics to disease-relevant dysfunction in at least three examples
Integrate transport, signaling, and trafficking into one cellular scenario
Identify which domain governs each step of a multi-domain scenario
Your checkpoint
An integrative case study of 600 words tracing a receptor from synthesis through surface delivery, signaling, and downregulation, with domain tags on every step
Membrane Structure and Composition & Membrane Transport & Membrane Signaling and Receptors & Membrane Bioenergetics & Membrane Dynamics and Trafficking
Synthesize all five domains into a single concept map with cross-links
Complete a full-length timed practice exam under test conditions
Diagnose weak areas from exam performance and remediate the two lowest-scoring domains
Recite key quantitative relationships from memory
Your checkpoint
A full-length timed practice exam scored and reviewed, plus a one-page remediation sheet for the two weakest domains
Milestones
Week 2: Score at least 80% on the bioenergetics problem set and correctly explain proton motive force aloud in under two minutes
Week 4: Complete the comparison table with all eight transporters and correctly predict flux direction on at least four of five gradient calculations
Week 6: Reproduce the secretory and endocytic flowchart from memory with at least nine of ten steps correct
Week 8: Score at least 75% on the full-length timed practice exam with no domain below 60%