The key feature of the action potential that prevents it traveling backwards towards the soma as well as forwards down the axon is
A. the activation state of the voltage-gated Na+ channel.
B. the inactivation state of the voltage-gated Na+ channel.
C. the activation state of the voltage-gated K+ channel.
D. the inactivation state of the voltage-gated K+ channel.
E. the temporary cessation in activity of the Na+/K+ pump.
B. the inactivation state of the voltage-gated Na+ channel.
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In the Hershey and Chase experiment, how did labeling DNA and protein with different radioactive isotopes demonstrate that DNA, rather than protein, carried the genetic information in the T2 virus?
A. Researchers could track which part of the virus entered a bacterial cell. B. Researchers could better elucidate DNA or protein structure. C. Researchers could use radio labeling to inactivate DNA and protein in the bacteria. D. Researchers could distinguish bacterial DNA from viral protein. E. Researchers could monitor how DNA interacted with protein in the virus.
Cardiac output is defined as the pressure and amount of blood pumped by the ventricles
Indicate whether the statement is true or false.
You have blood type O and need a transfusion. Which donor would be best?
a. type O b. type AB c. type B d. type A
________ is a two-step process that depends on the activity of at least two genera to carry out the oxidation of ammonia to nitrate.
Fill in the blank(s) with the appropriate word(s).