In the context of the neural impulse, which of the following causes the depolarization of neuron membranes? Multiple Choice
The inside of the neuron becomes negatively charged because of the excess of calcium ions.
Sodium gates open, and sodium ions flow into the neuron.
The outside of the neuron becomes positively charged because of the excess of chlorine ions.
О O
Potassium channels open, and potassium ions flow out of the neuron.

In a sense we’ve come to our nation’s capital to cash a check. when the architects of our republic wrote the magnificent words of the constitution and the declaration of independence, they were signing a promissory note to which every american was to fall heir. this note was a promise that all men—yes, black men as well as white men—would be guaranteed the unalienable rights of life, liberty, and the pursuit of happiness. it is obvious today that america has defaulted on this promissory note insofar as her citizens of color are concerned. instead of honoring this sacred obligation, america has given the negro people a bad check, a check that has come back marked “insufficient funds.” but we refuse to believe that the bank of justice is bankrupt. we refuse to believe that there are insufficient funds in the great vaults of opportunity of this nation. and so we’ve come to cash this check, a check that will give us upon demand the riches of freedom and security of justice. in this section of the speech, analyze martin luther king’s connection between a defaulted promissory note and the lack of freedom experienced by african americans. which option offers the best analysis? question 3 options: a.mlk creates this analogy to communicate that america has enough freedom for all, but it needs to live up to its promises. b. mlk makes the analogy that america has run out of freedom. not everyone deserves to have it. c.mlk communicates that america should equally distribute funds to all citizens. everyone deserves equal access to the government’s money. d.mlk demonstrates that america is improving in equality and should keep the forward momentum.

Which of the following is an example of how the principle of beneficence can be applied to a study employing human subjects? providing detailed information about the study and obtaining the subject's consent to participate. ensuring that the selection of subjects includes people from all segments of the population. ensuring that persons with diminished autonomy are protected. determining that the study has a maximization of benefits and a minimization of risks.

The health care system in is referred to as a singleminus−payer health care system, and is a system in which the government provides national health insurance to all residents.