Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Life Sciences & MedicineIf a pharmaceutical company aims to increase cAMP levels within a cell to treat asthma, which consequence follows an activation of adenylyl cyclase?
A)Decreased protein kinase A (PKA) activity
B)Increased protein kinase A (PKA) activity✓
C)Reduced glycogen breakdown rate
D)Increased glycogen synthase activity
💡 Explanation
Increased cAMP levels activate protein kinase A (PKA) because cAMP directly binds to the regulatory subunits of PKA, releasing the catalytic subunits to phosphorylate downstream targets. Therefore, increased adenylyl cyclase activity leads to increased PKA activity, rather than decreased activity or impacting glycogen metabolism directly.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Life Sciences & Medicine →- Which process explains why the smooth endoplasmic reticulum synthesizes lipids in eukaryotic cells?
- A botanist observes that a plant's stem is elongating more rapidly than expected in low-light conditions. Which mechanism explains why this occurs?
- What causes allele frequency changes when a small group of migrating butterflies establishes a new isolated colony?
- In metabolic syndrome, which mechanism explains why adiponectin levels decrease despite increased fat mass?
- If a dermal fibroblast culture is treated with platelet-derived growth factor (PDGF), which consequence follows?
- Which mechanism explains how bacterial populations coordinate gene expression in response to increasing cell density?
