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.
The role of deep-sea coral reefs in the environment is to provide critical habitat for many other organisms. So, the correct option is C.
<h3>What do you understand about Coral reefs?</h3>
A coral reef is an underwater ecosystem characterized by reef-building corals.
Coral reefs provide critical habitat for many invertebrates and fishes. These organisms are also known as cold-water corals, as they are found in the deeper and darker part of the ocean where the temperature is extremely low.
Therefore, the role of deep-sea coral reefs in the environment is to provide critical habitat for many other organisms.
To learn more about the Coral reefs, refer to the link:
brainly.com/question/364711
Correct answer: B). Cell growth
The Interphase is often referred to as a metabolic phase of the cell cycle because in this phase the cell obtains nutrients, read its DNA, conduct other cell functions. Most of the eukaryotic cell spend most of their time in interphase, it is also called as a resting phase.
The main purpose of interphase is to prepare and check the conditions in order to conduct the successful cell division. In this phase, the cell prepares itself for the division. In this phase, the cell organelles double in number and replication of DNA takes place, and the synthesis of protein, which is required for cell growth are made in this phase of cell growth.
CHNOPS
Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorus
Sulfur
Answer:
Bifocal lenses are used for people who are both nearsighted and farsighted. It is common for people who are over the age of 40 to begin to notice a change in their vision and require the need for bifocals. As we age, our eyes begin to have trouble focusing on objects at different distances away.
Explanation:
