Pepsin is an enzyme that breaks down proteins and is produced in the stomach
<span>type of tissue do you think makes up the three layers of membrane you encountered in your muscle are the connective tissue. the skeletal tissue is made up of muscle fibers. these fibers are surrounded by 3 layers of connective tissue to form a muscle</span>
Explanation:
Cell membranes are selectively permeable. Some solutes cross the membrane freely, some cross with assistance, and others do not cross at all. A few lipophilic substances move freely across the cell membrane by passive diffusion. ... Large molecules do not cross intact cell membranes, except in certain special cases.
Speciation in a deer population as a result of geographic isolation
