Answer:
B) action potential
Explanation:
The ions continuously flow across the cell membrane in the cells which establishes a membrane potential across the membrane. The cell membrane tries to maintain the negative potential between -40 to -90 mV.
At rest the neuron cell maintains the membrane potential around -70mV and this potential are known as the resting potential.
When the positive ions especially sodium ions enter the neuron then the positive charges get accumulated inside the cell. This changes the potential to a more positive value and when it crosses the threshold of -55mV then an action potential is formed.
In the given question, if the membrane potential changes from –70 to +50mV then an action potential will be generated in the neuron cell.
Thus, B) action potential is the correct answer.
Answer:
Among the options given on the question the correct answer is option C.
They were written by Thomas Jefferson and James Madison.
Explanation: The Kentucky and Virginia resolutions were drafted on 1798 and 1799 by the legislatures of Kentucky and Virginia opposing the Alien and Sedition act of Federal Government. The resolution argued that states have the power to announce any law of federal government as unconstitutional which are not according to the constitution. Later the principles of the resolution came to know as the Principles of 98. The Kentucky resolution argued that individual state has the power to declare any central as unconstitutional and void in the state. The Virginia resolution discussed that that the states have a right to "interpose" to prevent harm caused by unconstitutional laws
However, both of the resolution were written by Thomas Jefferson and James Madison in 1798 secretly.
Therefore, it can be said that the option C is true about Kentucky and Virginia resolution.
Answer:
it was Spain
Explanation:
rather than Portugal, that first made extensive use of enslaved Africans as a colonial labor force in the Americas. Ferdinand II pointing across Atlantic to where Columbus is landing with three ships amid large group of Indians, ca.
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