Answer;
-Protein ions
A resting axon's fluid interior has a mostly negative charge thanks to the presence of large protein ions.
Explanation;
-Intracellular and extracellular fluid of neurons contain various kinds of charged ions. These include sodium (Na+), potassium (K+), and chloride (Cl-). Additionally, these fluids contain many negatively charged protein molecules called anions (A-).
-The movement of such ions across neural membranes creates electrical activity. As ions move in and out of the cell, they bring their respective charges (either positive or negative) with them, thus influencing the voltage of cellular membranes.
-The protein molecules are large negatively charged proteins (anions) that are manufactured inside cells. They always remain inside the cell, as there are not membrane channels through which they can leave.Their charge contributes to the negative charge on the intracellular side of the membrane.
The right options are;
1- Storing and holding money
2- Making purchases to create profits
3- Lending money
4- Investing in the economy
A bank is an authorized financial establishment that accepts deposit, provide loans, and pay interest to its customers. Banks mainly take care of financial affairs and they are highly important to the economy. The main role of banks is to put their customer’s money to use by lending it out to others while the banks also generate money from it. Various activities carried out by banks include personal banking, insurance, foreign exchange trading, corporate banking, etc.
The right side of the heart sends blood out to the lungs to become oxygenated and that oxygen-rich blood comes back to the heart on the left side. Then the left side of the heart pumps the oxygenated blood to the rest of the body.