Through what protein can water cross the cell membrane

(b) Carrier proteins are more selective, often only allowing one particular type of molecule to cross. A specialized example of facilitated transport is water moving across the cell membrane of all cells, through protein channels known as aquaporins.

Explanation:

answer: 45

explanationyou have to add as well to be it could be

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.