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Cell Membrane & Tonicity Worksheet. Composition of the Cell Membrane & Functions. The cell membrane is also called the PLASMA membrane and is made of a phospholipid BI-LAYER. The phospholipids have a hydrophilic (water attracting) HEADS and two hydrophobic (water repelling) TAILS.
Some of the functions of the cell membrane include protecting and enclosing the cell, giving shape to the cell, allowing transportation of materials in and out of the cell, and carrying out metabolic reactions near the inner surface of the cell membrane.
Cell membranes are made of phos-pholipid molecules that arrange themselves into two rows called a bilayer. Proteins are embedded in the phospholipid bilayer, through one or both layers. These proteins help other molecules cross the membrane, and they perform a va-riety of other functions.
With a variety of activities, such as labeling diagrams, matching terms, and analyzing processes, these worksheets cater to different learning styles and ensure that students grasp the fundamental concepts of cell membrane biology.
Review the animal cell plasma membrane by labeling this diagram. Label the items in boldface type: Start with the cytoplasm, extracellular fluid, and a fiber of the extracellular matrix.
This worksheet describes how small molecules like oxygen move across the phospholipid bilayer by diffusion. Students color the phospholipids, proteins, and molecules on the image to further their understanding of cell transport.
Composition of the Cell Membrane & Functions. The cell membrane is also called the _______________ membrane and is made of a phospholipid _____________. The phospholipids have a hydrophilic (water attracting) __________ and two hydrophobic (water repelling) ____________.