Answer:
Active transport mechanisms require the use of the cell’s energy, usually in the form of adenosine triphosphate (ATP).
Explanation:
If a substance must move into the cell against its concentration gradient, that is, if the concentration of the substance inside the cell must be greater than its concentration in the extracellular fluid, the cell must use energy to move the substance. Some active transport mechanisms move small-molecular weight material, such as ions, through the membrane.
In addition to moving small ions and molecules through the membrane, cells also need to remove and take in larger molecules and particles.
the answer is sodium and potassium
Answer:
irregular
Explanation:
it experiences a sudden rise. brainly please
4. Sclera
5. Cornea
6. False
7. Blink
You can infer there is a big population of sierra leone
As of 2013 the population of sierra leone is 6.092 million and is increasing.