The glucagon receptor is a membrane protein that can produce a signal for glucose to be released into the bloodstream. It is found primarily in liver and kidney cells and is embedded in a lipid bilayer 1- bpd blayer ipid bilayer 4 Locations 1, 3. and 4 indicate the protein surface Location 2 indicates the protein interior. What types of amino acid would be predominantly found in the locations labelled 1-47 Select one alternative: O There is not enough information provided to answer this question. O 1. polar/charged: 2. hydrophilic: 3. non-polar 4. hydrophilic 1. hydrophilic: 2. non-polar 3. non-polar 4. non-polar. 1. hydrophilic 2. non-polar, 3. non-polar 4. polar/charged.