The 1st one, an organ system includes tissues. Hope this helps!
We have two surfaces of nerve cell the outer and inner surface
- resting : when the outer layer ion charges more positively than the inner layer - depolarization : we have the counter part of this state
- repolarization : return to the polarization
- hyperpolarization : the inner negative ion charges will be more negative even more than the resting potential
Resting potential: the inside of the neuron's axon is -70mV versus the outside of the membrane
Threshold potential: If the impulse that is received by this neuron's dendrtes meets or exceeds its threshold level enough Na+ activation gates (which are protein ion channels in the axon membrane) will open and Na+ will start to flow into the axon following a charge and concentration gradient.
Depolarization: If the action potential has been initiated (and Na+ has started to move into the axon) then the internal negative charged areas of the membrane will open their Na+ gates as well.
Repolarization: Once K+ have started to move outside of the axon, the original charges along the axon membrane start to become reestablished
Hope That Helps!
Answer:
The correct answer is - option D. Soil erosion.
Explanation:
Soil erosion is a normally happening process that has an impact on all landforms. In common agriculture soil erosion alludes to the removing or disintegration of a field's top layer by the normal physical powers of water
Running water is the main source of soil erosion since water is plenty of quantity and has great power. Exercises that eliminate vegetation upset the ground, or permit the ground to dry are exercises that expand disintegration.
Thus, the correct answer is - option D. Soil erosion.
Answer:
Gap junctions
Explanation:
The cell to cell communication is a characteristic feature of the multicellular organism which takes place through the special junctions.
The epithelium is a layer of animal cell therefore the junction which allows the passage of small molecules from one cell to another cell is known as Gap junction.
Gap junctions are formed by the arrangement of connexon proteins in the membrane which allows the molecules smaller than the 1000 Da to move between the cells.
Thus, a Gap junction is the correct answer.
Answer:
the chloroplasts of the plant cell
Explanation:
