When the voltage of a plasma membrane shifts from +35 mV towards 0 mV, the cell is ________.
A. depolarizing
B. reaching the threshold
C. hyperpolarizing
D. repolarizing
E. exiting the threshold
Answer: D
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If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells ________.
A) it would be much longer before cardiac cells could respond to a second stimulation B) contractions would last as long as the refractory period C) tetanic contractions might occur, which would stop the heart's pumping action D) it would be less than 1?2 ms
Anaphylaxis is the most serious potential side effect of ________________________________________
Fill in the blank(s) with correct word
The only role of modulator molecules is to enhance the binding affinity of the functional site of an allosteric protein
Indicate whether the statement is true or false.
High-quality ________ proteins are those that provide all the essential amino acids
A) fibrous B) complete C) globular D) net E) incomplete