Answer:
Explanation:
The cell membrane separates the cell from the outer environment. The extracellular fluid contains the sodium ions (Na+), chloride ions (Cl-), while intracellular fluid contains potassium (K +) and negative anions.
The potential difference arises when the membrane is selectively permeable to some ions. The resting potential is -70mV.
When the neurons get excited, the sodium ions start to enter by sodium channels.
Now there are more positive ions inside the cell membrane. It disturbs the resting potential i.e. -70mV. This stage is known as depolarization.
When the inside environment of the cell is more positively charged, the potassium ions start to move out of the cell. It goes out by the voltage-gated channels. Thus resting stage is maintained and it is known as repolarization.
But the initial stability of the cell membrane has to be maintained. To restore the resting stage, the sodium ions start to move out of the membrane and potassium ions enter into the cells again. This is an active transport and has done by the Na+ - K+ pump. Here 3 sodium ions move out and 2 potassium ions pumped into the cell through the plasma membrane.
Thus the resting potential regains. The potassium ions come back into the cells against the concentration gradient and ATP provides the energy for this phenomena.
The correct answer is letter "B. Conical shape ." The characteristic of a pine tree is an adaptation to the climate of the northwestern coniferous forests is that it is in conical shape. If C were needle like leaves that would be the best answer.
Here is the definition
<span>
an unborn or unhatched offspring in the process of development.</span>
a) "I can buy some aloe vera gel to use on the area."
Explanation:
The best statement made by the patient to have summed up the effective of the teaching is that "I can buy some aloe vera gel to use on the area".
Desquamation of the skin is a medical condition that involves the peeling of the skin. It involves the shedding of the outermost layer of the skin layer. It is also referred to as exfoliation.
- Skin peeling be as a result of some infections that affects the skin.
- It can also be due to sun burn of the skin.
Application of aloe vera gel on the area can soothe the peeling of the skin and moisten the area. This an effective process.
Learn more:
Skin burn brainly.com/question/3045789
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Answer:
B
Explanation:
Its a poison stay away from it no matter how much it is
