Answer: Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm.
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Answer:
giraffes necks consists a tall bone like structure called notochord which gives support to the skeletal system like how do we have backbone
Answer:
Meiosis results in the production of gametes (sex cells)