Answer:
c) A cell must have the appropriate receptor before it can bind to the hormone.
Explanation:
Hormones are chemical signals that are secreted into the circulatory system acting as regulators within the body, and even though they can reach any part on the body, <em>only certain types of cells are equipped to respond, these cells are known as target cells, when the hormone reaches a cell with an adequate receptors it triggers a signal transduction and then a response.</em>
Therefore the correct answer is c.
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Planaria<span> can be </span>cut<span> into pieces, and each piece can </span>regenerate<span> into a complete organism. crazy huh</span>
I think the answer should be True! Because it had the distance from to the sun and Earth is only one astronomical unit.
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ATP is produced when The energy from photons hitting photo system.
