Which is not a tropic hormone?
A. Thyroid-stimulating hormone
B. Adrenocorticotropic hormone
C. Follicle-stimulating hormone
D. Prolactin
D
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Your favorite niece just gave you a kiss. What muscle did she use?
A. Depressor labii inferioris B. Procerus C. Orbicularis oculi D. Orbicularis oris E. Depressor anguli oris
First messengers may bind to a membrane receptor that is an ion channel, which promotes a change in membrane polarity.
Answer the following statement true (T) or false (F)
The structures that help prevent toxins in the blood from reaching the brain make up the __________ __________ barrier.
Fill in the blank(s) with the appropriate word(s).
Two water molecules are weakly attracted to each other when a slightly positive hydrogen atom in the first molecule is attracted to the slightly negative oxygen atom on the second molecule. What type of bond is this?
A) Ionic B) Polar covalent C) Nonpolar covalent D) Hydrogen bond