Answer:
It needs protein channels known as Aquaporins.
Explanation:
These Aquaporins, also referred to as water channels, are membrane proteins which serve as passageways for water. Aquaporins facilitate the transportation of water and other neutral molecules across cell membranes.
Only once because the DNA replication initiation is tightly linked to cell cycle progression,ensuring that replication occur only once per cycle
The planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune revolve around the sun (a star), and these planets have moons that revolve around them.
Answer:
<span>Planets revolve around a star, and moons revolve around planets.
Hope this helps.</span>
