Its the outer layer for exchanging substance in and out the cell. Thats also the reason why cell membrane are partially permiable
Answer:
b
Explanation:
high pressure creates rain
The functions of certain cells or organs are regulated by hormones, which circulate in the circulation.
Some basic characteristics of a hormone are:
- They are substances generated chemically by certain endocrine gland cells.
- Circulation carries them to the desired cells, tissue, or organ.
- They act according to their kind.
- They are present in incredibly small numbers. Most of them are soluble in water.
- They have a light molecular structure.
- After acting, they are destroyed.
- They are heterogeneous substances in terms of composition.
- They can't be kept for a very long period; typically, they are synthesized and secured as needed.
- Typically, they create hormone receptor complexes in target cells to activate them.
Learn more about the characteristics of hormones here:
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The ATRIA are the superior chambers of the heart. These are responsible for the chamber for blood. while the VENTRICLES are in the inferior chambers of the heart. These are responsible for pumping blood the lungs and to the body.