The basic unit of life is cell(s).
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.
Explanation: I found this answer on quizlet
Answer:
The lens
It helps to focus on objects and light
C) water and energy ATP
The end products of respiration.
Answer:
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