the phospholipids are tightly packed togther and the membrane has a hydrophobic interior.
When you want to either touch something to figure out whether or not it might be harmful or not. And we also use our sense of touch when we might be looking for an object, when you touch the object immediately your brain knows what it is.
Answer:
I'm pretty sure its C i haven't done this since 7th grade
Trypsin is a serine protease found in digestive system of vertebrates. they are produced in the pancreas.it catalyzes the hydrolysis of peptide bonda, breaking down into smaller peptides
in tissue culture, trypsin is used to re suspend cells adherent to the cell culture dish wall.
Erepsin is a protein found in intestinal juices but can also be found in many other cells.
Birds need feathers or wings because a bird without wings they may get in danger and will not be able to eat do you know an opposum it can eat a bird or eagle