What happens during depolarization?
A. Potassium ions flow out of the cell.
B. Sodium ions flow into the cell.
C. The sodium/potassium pump protein
reverses itself.
D. Potassium ions flow out of the cell AND
sodium ions flow into the cell.
B
You might also like to view...
The loop of Henle dips into the renal cortex. This is an important feature of osmoregulation in terrestrial vertebrates because _____
A) absorptive processes taking place in the loop of Henle are hormonally regulated B) differential permeabilities of ascending and descending limbs of the loop of Henle are important in establishing an osmotic gradient C) the loop of Henle plays an important role in detoxification D) additional filtration takes place along the loop of Henle
Dinoflagellates that exist endosymbiotically within a variety of marine invertebrates are called
A. parasites. B. endotrophic. C. endoflagellates. D. zooxanthellae.
In most eumetazoans, the muscles of the body wall are derived mainly from which embryonic cell layer?
a. mesoderm b. epiderm c. mesoglea d. endoderm e. ectoderm
Correlation may be considered proof of a causative relationship between two variables
a. true b. false