Delete Content. A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).
The pancreas contains cells which release both insulin and glucagon. The endocrine system consists of a number of different glands which secrete hormones that dictate how cells and organs behave.
the gland is also known as the mixed gland answer is C. submandibular I believe the answer is pancreas.he pancreas is a mixed gland because it has both endocrine and exocrine secretions. On the endocrine side there is insulin and glucagon to regulate our blood sugar levels.