Many g protein-coupled receptors contain seven transmembrane α-helical domains. the amino end of the protein lies at the exterior of the plasma membrane. loops of amino acids connect the helices either at the exterior surface or on the cytosolic surface of the membrane. the loop on the cytosolic side between helices 5 and 6 is usually substantially longer than the others. where would a coupled g protein most likely interact with this receptor?

chordata is the answer

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.