<span> They are unable to pass through the plasma membrane and have different methods of action. They attach to their receptors in the target cell surface and influence activity within the cell through cytoplasmic intermediates called second messengers. </span>
<span>The two most important messengers are cAMP and inositol triphosphate. </span>
<span>Cyclic AMP: ATP is converted into cAMP after a series of reactions on the plasma membrane following the attachment of the hormone to the membrane. cAMP relays the signal from the membrane to the metabolic machinery of the cytoplasm. </span>
<span>Inositol Triphosphate: Involves the use of Ca+2 that regulates cellular protein activity.
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Hope this helps !!!^_~!!!
Answer:
Cytotoxic T cell
Helper T cell
Explanation:
Adaptive immune system is a part of the immune system initiated only when there is an attack by a pathogen or foreign substance. The adaptive immune system is beckoned on when the infection is insurmountable for the body's first line of immunity, which is the innate immune system.
The adaptive immune response is triggered by the white blood cells called LYMPHOCYTES. Lymphocytes consists of T cells and B cells. T cells are either cytotoxic or helper T cells. The cytotoxic T cells kills the cells infected with the virus while the Helper T cells activate every other cell involved in the immune process.
If a neuron is exposed to tetrodotoxin ,sodium ions will be unable to cause the action potential,therefore being blocked from passing any impulses or receiving them...
1. Yo C. vengo de Asuncion.
2. Nosotros B. venimos de Puerto Rico.
3. Ellas A. vienen de San Lorenzo.
This is how you should conjugate the verb <em>venir </em>(meaning - to arrive, come from...)
1. yo vengo 1. nosotros/nosotras venimos
2. tu vienes 2. vosotros/vosotras venis
3. el/ella viene 3. ellos/ellas vienen
Water is not a living thing because it is not made up of a living atomic structure, water is instead made up of 2 hydrogen atoms and 1 oxygen atom unlike other living creatures.
Hope this helps!=)
