I need this one to be answered

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture