Auxins promote cell elongation and cell division in stems.
Answer:
The neurons interact with each other at synapse through action potential generated in response to the stimulus. At the resting phase, all the ion channels remain closed and the cell maintains a high amount of Na⁺ ions outside the cell and a high amount of K⁺ ions inside the cell. This difference maintains the membrane potential at -70mv.
When a stimulus activates a cell receptor, it causes the opening of the sodium channels in response to either mechanical stimulus or neurotransmitter released due to stimulus. The opening of the sodium channels leads to the influx of Na⁺ ions which changes the potential from -70 mv to more positive value. When this change in membrane potential reaches - 55 mv it leads to the opening of the voltage-gated channels which causes an influx of Na⁺ ions. This more influx of Na⁺ ions leads to depolarization when the membrane reaches above the threshold and the action potential is generated in the neuron.
I think the correct answer from the choices listed above is option B. The social consequence of global fuel dependence is the <span>increase in atmospheric pollution levels</span><span>. This is because the use of these fuels cause the production of harmful gases which are emitted to the atmosphere directly which will really affect the people. </span>
Answer:
An organism lives in its habitat within a community. The role or job of an organism within a community is its niche.
Explanation:
