Indicate the order in which the following avents occur as an action potential is generated and propagates down the axon:

_Graded potentials are summated and membrane potential at axon
hillock (initial segment) reaches threshold.
_Nat gates close AND voltage-gated K channels open.
Efflux of K+ ions repolarizes, theh hyperpolarizes the axolemma.
_Na - K+ pumps & leakage channels re-establish resting membrane
potential.
_Reaching threshold activates/opens voltage- gated Nat channels
on the conductive segment of the neuron.
_Influx of Nations into the axon depolarizes the axolemma.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.