When the dentist gives you a shot of Novocain, why to you not feel any pain when s/he drills into your
tooth?
a. The neuron remains in the depolarized state.
b. A transmembrane potential does not form.
c. The drug decreases the external Na+ concentration.
d. Voltage-activated K+ channels are blocked.
e. Nerve transmission is blocked
E
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The wall that divides the nasal cavity is called the _____
a. nasodivision b. nares c. nasal septum d. nasal meatus.
Some archaeons are symbionts in animal digestive tracts.
Answer the following statement true (T) or false (F)
To form a blood clot, a series of plasma proteins must activate in a given sequence. If DNA info for one such protein mutates such that the resulting protein is nonfunctional, predict the consequence.
A. It depends on which protein is affected. B. Regardless of the protein involved, the clot would not form.
The (maximum/optimum/selective) growth temperature is the temperature at which an organism exhibits the highest growth rate.
Fill in the blank(s) with the appropriate word(s).