Answer:
A) Plant Cells
Explanation
Cell walls are only found in plant cells and are used primarily to create structure, but cell membranes are found in all cells.The bulk of the membrane is composed of a double layer of lipids called the lipid bilayer. Inside the bilayer there is a layer of cholesterol to keep the membrane fluid.
Calcium is stored in the terminal cisternae in the sarcoplasmic reticulum of the muscle cell. Calcium ions are stored there until muscle contraction occurs. During muscle contraction, calcium ions are released in order to initiate the contraction.
No, not really because if nothing is near them they cant sense any type of danger. But if something is close they may be afraid but don't sense danger. It basically a spiderman myth.
Hope I helped!
- LILBLAKEYOUT
Explanation:
One of the many things cells can do is reproduce either sexually or asexual to get more cells depending on how these cells work.
It will decrease greatly and evenully the speicies will die.
