MCQOPTIONS
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| 1. |
The signaling molecules called steroid hormones |
| A. | are hydrophilic and so cannot penetrate the plasma membrane |
| B. | are made in one location of the body but have their effects some distance away. |
| C. | never enter the blood of humans |
| D. | bind to cell surface receptors to trigger chemical cascades |
| Answer» C. never enter the blood of humans | |