Which of the following allows a membrane potential to be measured directly by taking into account relative permeabilities and gradients for all permeable ions?
a. Goldman-Hokgkin-Katz equation
b. Nernst equation
c. Fick's equation
d. All of the above
e. Only a and c
A
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Answer the following statements true (T) or false (F)
1. An ECG is a graphic representation of the heart’s electrical activity. 2. An unusual P wave tracing on an ECG would indicate a problem with ventricular depolarization. 3. The QRS complex on an ECG measures the repolarization of the ventricles. 4. The T wave tracing measures atrial repolarization. 5. Depolarization occurs just before contraction.
On a sagittal or coronal sectional image, the optic chiasma is in the vicinity of the ____________________.
Fill in the blank(s) with the appropriate word(s).
The liver is responsible for detoxifying the blood. One can thus surmise that liver cells, hepatocytes, likely have an abundance of which of the following?
A. Lysosomes B. Ribosomes C. Peroxisomes D. Mitochondria
In a DNA molecule, the phosphate serves ________.
A) as a code B) to hold the molecular backbone together C) to bind the sugars to their bases D) as nucleotides