The regulation of the Na-K* pump is critical to the health of an organism. It disobeys one rule we usually think of in cell transport because the movement of these ions goes against the concentration gradient. The pump mechanism is
triggered by
within the bi-lipid layer.
A)
phospholipids
B)
nerve endings
hydrophobic ends
D)
membrane proteins
P
G

The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.