The Thin Outer Skin of a Cell
This page is the CodyCross answer for the clue below from Health and Fitness, Group 2135, Puzzle 4 (Spin Bicycles).
Question is: The Thin Outer Skin of a Cell
and the answer is: MEMBRANE
Word Meaning:
MEMBRANE — (anatomy, zootomy) A flexible enclosing or separating tissue forming a plane or film and separating two environments.
Definitions from Wiktionary.