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.
Answer:
baking soda and corn starch
Explanation:
im working on the same lab right now im almost done if you need any help
July is the warmest summer it has been proven by me and my fellow class mates.
A cell is the smallest unit<span> of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the</span>basic<span> building blocks of all organisms.</span>
The correct answers are A) Athens agree to pay the tribute, B) Young people participate in the lottery, and D) Theseus fights the Minotaur.
In the plot of “Cruel Tribute,” the events that are results of King Mino’s actions are: Athens agrees to pay the tribute, Young people participate in the lottery, and Theseus fights the Minotaur.
The “Cruel Tribute” refers to the Greek mythology and the story of Theseus, who confronts the Minotaur and kill it.
James Baldwin is the author of “The Cruel Tribute”. James Baldwin (1924-1987) was an American novelist. He also wrote many novels on African American issues and Civil Rights such as “Nobody Knows my Name”, “Another Country”, and “The Fire Next Time”.
