Compare and contrast the mechanisms of action of lipid-soluble versus water-soluble hormones
What will be an ideal response
Upon reaching their target cells, lipid-soluble hormones diffuse across the phospholipid bilayer of the target cell membrane and bind to receptors in the cytosol or nucleus. The activated receptor usually acts by turning transcription of genes either on or off, thus regulating synthesis of a protein. Water-soluble hormones bind to membrane receptors, which activate intracellular signaling pathways that lead to changes in the cell's metabolic activity.
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Which muscle acts as an antagonist to rectus abdominis?
A. Trapezius B. Sternocleidomastoid C. Transversus abdominis D. Erector spinae E. Splenius capitis
Define passive immunity
What will be an ideal response?
Isotopes of the same element have
A. different numbers of protons and electrons. B. no mass number. C. the same atomic number but differ in their mass numbers. D. the same mass number. E. the same number of neutrons but different numbers of protons.
The same ________ can have different effects depending on the properties of the ________
A) substrate; enzyme B) receptor; neurotransmitter C) neurotransmitter; receptor D) hormone; neurotransmitter