The cell membrane is made up of what type of bi-layer A Hydrophillic Head and Hydrophobic Tail

B Hydrophobic Hear and Hydrophillic Tail

C Cholesterol and DNA

D Protein Chambers and MicroFilaments

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis