Very briefly, explain how a ligand binding to the extracellular receptor region of a GPCR causes a change in biological events inside the cell.

The exchange of materials between RPE cells and the rods and cone cells is very important. Suggest by which membrane transport methods ions, proteins and damaged fragments of rod cells would be taken into the RPE cells. Outline the properties of stem cells which will help to repair the RPE layer of a patients retina after implantation of the thin sheet of cells. Outline how the presence of a base substitution mutation in the ABCA4 gene would result in the synthesis of a protein which cannot carry out its normal function. Need short answer in text solution and ASAP .

You are in a research lab studying the function of the mutated form of a receptor called Protein X, which results in disruptive symptoms in human patients: extreme fatigue, low blood pressure, and dizziness among other symptoms that may be affecting the reproductive system. From detailed genetic studies, you have found that there is a mutation in the region where the Nuclear Localization Signal (NLS) of Protein X is, which may account for the symptoms seen in patients. What kind of receptor is Protein X most likely to be? Select one: O a. Steroid Family Receptor O b. GPCR Growth Hormone Receptor O d. Thyroid Hormone Receptor

The C1 inhibitor plays an important role in: x promoting dissociation of the C1 complex. inhibiting the classical and MBL pathways. blocking formation of the C1 complex. The first two answers are correct. All of the answers are correct.