Living cells cannot be viewed under an electron microscope.
Answer the following statement true (T) or false (F)
True
You might also like to view...
If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________
A) tetanic contraction would occur due to the short absolute refractory period of cardiac muscle B) threshold is reached more quickly and heart rate would increase C) potassium channels compensate and no change in heart rate would occur D) heart rate would decrease, but blood pressure would rise due to the excess sodium present
An enzyme is
A) the genetic material. B) a protein that promotes metabolic reactions by slowing reactions that are too fast. C) a molecule, usually a protein, that speeds the rate of a biochemical reaction by lowering the activation energy. D) usually a vitamin.
The enzyme carbonic anhydrase is found:
a. in red blood cells b. in white blood cells c. in epithelial cells lining blood vessels d. as a free protein in blood plasma
When looking at the ventral surface of the sheep brain, which of the following structures is the most anterior?
A. Facial nerves B. Oculomotor nerves C. Optic chiasma D. Olfactory bulbs E. Mammillary body