The way in which a cell responds to contact with other cells depends on the function and activity of both cells. Most normal cells cease division if they come into contact with other cells; however, cells of the immune system interact directly with pathogens or foreign organisms to destroy them.Know More
Under normal circumstances, most cells replicate themselves by dividing into two cells, consuming more space. When normal cells come into contact with other cells, the division process stops. This is called "cellular inhibition." This function is lost in cancerous cells, which proliferate at a dangerous rate.
Lymphatic cells and other cells involved in the immune system can be activated by contact with foreign organisms such as viruses. They attack the pathogens through a series of reactions at the cellular level.Learn more about Cells
Collar cells beat their flagella back and forth to force water through the sponge. Collar cells also pick up tiny bits of food brought in with water.Full Answer >
Schwann cells are the principle glia, which are neuron supports, in the peripheral nervous system. Schwann cells make up what is called the myelin sheath around the axon of the neuron. The function of this sheath is to protect and direct the nerve impulses.Full Answer >
Chloroplasts in the cells of elodea and other plants perform photosynthesis, converting sunlight into biochemical energy stored as carbohydrates. Both plants and the animals that consume them require carbohydrates to fuel cellular activity.Full Answer >
Meristematic cells are plant cells that divide and create new cells. They are physically responsible for the growth of the plant. There are two main types of meristematic cells: primary or apical meristems, which are responsible for increases in length, and secondary or lateral meristems, which cause an increase in width.Full Answer >