Answer:
<h3>B. The study of all living things.</h3>
Explanation:
Biology is the SCIENTIFIC study of life. It is a natural Science with a broad scope such as anatomy, physiology , morphology e.t.c.
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.
They are called ENZYMES.
Enzymes speed up the rate at which the digestion process occur so that the nutrients in the food can be absorbed by the body and used for the development of the body.
The tectonic plates move and shift due to Mantle convection
Mantle convection is caused by the magma in the mantle of the earth constantly being cooled near the crust and heated the closer it gets to the core and like normal convection the cool magma sinks towards the crust and the hot magma rises to the crust. this happens in a circular motion causing the crust to shift with the magma
