<u>arteries carry oxygenated blood and veins carry de-oxygenated blood.</u>
Its called adaption when an animal changes itself to be able to survive
Answer:
The mechanism by which cells regulate their ability to respond to extracellular messengers is known as receptor signalling.
Explanation:
Cells senses an environment and communicate which each other through ligand-induced activation of signalling receptors at the cell surface. Signalling receptors enter the endocytic pathway and are sorts into various compartments. Endocytosis regulates cell signalling by controlling the number of receptors available for activation in plasma membrane and activation of receptors or downstream effectors often stimulate receptor endocytosis.
Answer:
A-G1->S->G2->Mitosis->Cytokinesis
Explanation:
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