3(multiple choice worth 4 points)

(02.04 lc)

identify the selectively permeable barrier of the cell that allows certain molecules to enter and exit the cell?


  a  c  e  f

F- cell membrane

Explanation:

The cell membrane is a selectively permeable barrier of the cell that allows certain molecules to enter and exit the cell. The cell membrane consists of phospholipids and proteins. The phospholipids occur in two layers forming a lipid bilayer. Some proteins transverse the membrane lining pores through which certain substances pass.

b because they naturally adapt to their environment plz mark brainliest

explanation:

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.