Most likely because you don't know what could be in tap water (chemicals, germs)
Answer:
Diffusion
Explanation:Diffusion is the process in which molecules move from an area of lower concentration to higher concentration along the concentration gradient.
Answer:
A or B
Explanation:
To be honest both are accurate.
Lipid Bilayer.A plasma membrane is made up of Lipid Bilayers, which consists of polar phosphate heads, which are hydrophilic or water loving, and non-polar fatty acid tails, which are hydrophobic. Proteins are embedded in the membrane as well.Cell membranes are known to have holes, or selective permeable.
