A cell membrane pump helps human cells to maintain a relatively constant sodium and potassium concentration.
<u>Option: A</u>
<u>Explanation:</u>
Sodium potassium pump is a plasma membrane protein that utilizes energy ATP — Triphosphate Adenosine turning into ADP — Adenosine Diphosphate to deliver intracellular and extracellular sodium (NA+) and potassium (K+) ions sequentially. The purpose of this entire mechanism is to preserve cell equilibrium.
The extracellular medium has a greater concentration of Na while the K concentration of the intracellular fluid is lower. Proteins trap sodium ions in the cytoplasm and pump them out from the cells to preserve cell stability while preserving concentrations. Within the cells proteins inject potassium ions into the cell.
Answer:
Earth's Surface rise and climate. You are basically looking at the weather and the condition of the atmosphere.
Explanation:
When the average temperature at the Earth's surface rise, evaporation occurs more which causes precipitation to also occur more.
The lymph nodes are the lymphoid organs that serve in immune surveillance and in filtering lymph. They <span>are found in the neck, armpits, and groin areas. If a lymph node is swollen it means that there is an infection or injury.If you notice swollen lymph node you should see your doctor.</span>
I believe once the vesicle has budded from the golgi body the clathrin coat is lost. During budding the membranes and proteins are moved around the cell in small vesicles. A protein coat aids the budding of these vesicles from donor membranes, The major type of coat used by the cell is comprised of clathrin; a three legged protein that can form lattice-like coats on membranes destined for trafficking.
