If a dermal fibroblast culture is treated with platelet-derived growth factor (PDGF), which consequence follows?

💡 Explanation

PDGF is a key signal for stimulating cell division and tissue repair. Because PDGF activates receptor tyrosine kinases, triggering intracellular signaling pathways that promote cell cycle progression, therefore fibroblast proliferation increases rather than decreases or triggering apoptosis.

• What happens to a differentiating stem cell's gene expression profile when transcription factors activate lineage-specific genes?
• What happens to photosynthetic electron transport when chloroplasts experience excessive light exposure?
• If a pharmaceutical company aims to increase cAMP levels within a cell to treat asthma, which consequence follows an activation of adenylyl cyclase?
• What happens to the targeted DNA sequence following a Cas9-mediated double-strand break and homology-directed repair?
• If a plant's chloroplasts are exposed to a substance that inhibits ATP synthase, which consequence follows regarding the light-dependent reactions of photosynthesis?
• If a small group of finches colonizes a remote, previously uninhabited island, which evolutionary outcome becomes more pronounced?