Define and describe the role of up-regulation and down-regulation of proteins.
What will be an ideal response?
These terms refer to the net change in the amount of a functional protein present in a cell in response to a signal. Up-regulation is an increase in the amount of the protein, whereas down-regulation is a decrease.
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The motor neurons associated with intrafusal muscle fibers are referred to as ________ motor neurons.
Fill in the blank(s) with the appropriate word(s).
A change in a membrane potential from +30 mV to -70 mV is an example of
a. depolarization b. hyperpolarization c. polarization d. repolarization e. zero potential
The thoracic cavity contains the heart and lungs.?
Indicate whether the statement is true or false
In a normal ECG, the deflection that is generated by ventricular repolarization is called the ________.
A. QRS wave B. R wave C. S wave D. P wave E. T wave