Based on my analysis of the "Cell Membrane Coloring Worksheet," I can now provide the complete solution by filling in all the blanks with the correct biological terms.
Here's the completed worksheet with explanations:
Composition of the Cell Membrane & Functions
The cell membrane is also called the
plasma membrane. The membrane is made of a phospholipid
bilayer. The phospholipids have a hydrophilic (water-loving)
head and two hydrophobic (water-repelling)
tails. The head of a phospholipid is made of an alcohol and a phosphate group, while the tails are chains of
fatty acids. Phospholipids can move side to side and flip-flop within the bilayer. This movement allows small
nonpolar molecules to pass through into or out of the cell. This is known as simple
diffusion because it does not require
energy and the water or molecules are moving
down the concentration gradient.
RED and
BLUE are phospholipids coloring the heads red and the tails blue.
PHOSPHOLIPID
Another type of lipid in the cell membrane is
cholesterol that makes the membrane more fluid. Embedded in the phospholipid bilayer are
proteins that also act as H+ ions and as cell recognition. Proteins called
integral proteins go all the way through the bilayer, while
peripheral proteins are only on one side. Tapered proteins are also called
transmembrane proteins. Large molecules like
glucose or carbohydrates use proteins to help move across cell membranes. Some of the membrane proteins such as
receptor proteins are used to recognize each other and for communication.
This worksheet teaches students about the structure of the cell membrane, including its phospholipid bilayer composition, the role of cholesterol, and the different types of membrane proteins (integral, peripheral, transmembrane, and receptor proteins). It also covers basic transport mechanisms like diffusion.
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