When the neuron membrane becomes more positive than the resting membrane, it is said to be __________.
Fill in the blank(s) with the appropriate word(s).
depolarized
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The magnesium atom has 2 electrons in its outer energy level and is willing to donate both of them. The sodium atom has 7 electrons in its outer energy level and will accept 1 electron. The chemical formula for the compound formed by magnesium and sodium would be
a. Mg2Na b. MgNa2 c. Mg2S d. MgS2
Fertilization of the ovum usually occurs
A) within one hour of ovulation. B) as much as three to four days following ovulation. C) in the ovary. D) in the upper third of the uterine tube. E) in the uterus.
In an ELISA, which statement is true of the substrate?
A) It is the molecule that the secondary antibody binds to. B) It is the last molecule added. C) It is the molecule that the primary antibody binds to. D) It is the molecule that enzyme attaches to.
Which type of muscle tissue is autorhythmic?
A. Smooth muscle B. Skeletal muscle C. Both cardiac and smooth muscle are correct. D. Cardiac muscle E. Both skeletal and cardiac muscle are correct.