Answer:
Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber. The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions. The calcium ions diffuse into the muscle fiber.
Explanation:
Answer:
D. By decreasing the activation energy of a reaction
Explanation:
The answer would be no, because if evolution did occur in this situation, then habitats could just as well change, and evolution helps organisms to adapt to change.
Answer:
The plant cells with mutated (nonfunctional) aquaporins support the alternative hypothesis stated by different groups.
Explanation:
Aquaporins are proteins which are responsible for the transportation of water molecules across the semipermeable membrane of the cell. The main function of Aquaporins is to allow water molecules into the cell and block the passage for the ion molecules. Water can also pass through cell membrane through simple diffusion that support the alternative hypothesis.
