NICOTINE: Cell signaling pathway involved:  Signal mechanism (What is the ligand?)  Type of receptor: Basics of signal transduction pathway:

39 of 41 Which of the following statements best describes autocrine signalling? O A cell communication mechanism in which the signalling molecules bind to receptors located on the cell secreting the signalling molecules. A cell communication mechanism in which the signalling molecules bind to receptors located on adjacent cells. O A cell communication mechanism in which the signalling molecules are released into the circulatory system to bind to receptors located on cells in tissues some distance away. A cell communication mechanism in which the signalling molecules are peptide hormones. A cell communication mechanism in which the signalling molecules are steroid hormones.

Hello, I copy and paste the article to save image space. Can you please summarize what this paper is about and elaborate the result? The discussion should explain what this article is about. Please summarize the paper and its conclusion as if your explaing step by step to the class.

Which of the following is most likely an example of signaling through a transmembrane receptor? The influenza virus recognizes specific proteins on the surface of host cells, causing the entrance of genetic materials into the cytoplasm of the host cells.  Low-density lipoproteins (LDL) bind to receptor proteins found on the membrane of receiving cells, triggering its internalization into the receiving cells. The binding of interleukin-6 (IL-6) to the interleukin-6 receptor causes the activation of protein kinases in the cytoplasm, activating the transcription factor NF-κB. The binding of aldosterone to the aldosterone receptor activates its transcription activity, leading to the transcription of genes that promote the uptake of ions and water.