Answer:
The cell membrane
Explanation:
One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.
Body temperature in humans is kept fairly constant by automatic responses controlled by the A. Hypothalamus.
Answer:
no
Explanation:
If you have your own ways to do it., and you are doing good in class then do it your way.
Answer:
The correct answer is thymus gland.
Explanation:
In the immune system, the thymus is considered as a primary lymphoid organ. Thymus is present behind the sternum, above the heart and between the two of our lungs. It is made up of two-lobed and is involved in releasing hormones and providing immunity.
Thymus is the primary site where T- cells become mature. T- cells are formed in bone marrow but reaches to thymus for maturation. These mature T- cells play a very important role in providing adaptive immunity against foreign molecules.
Thymus is larger till puberty and it slowly shrinks as the age increases. So the correct answer is thymus.
