1. The image shows a phospholipid bilayer, which is the main component of cell membranes.
2. The hydrophilic heads (red circles) face outward toward aqueous environments, while the hydrophobic tails (white lines) face inward, away from water.
3. Embedded proteins (yellow and purple shapes) span or sit within the bilayer, facilitating transport and signaling.
4. This structure allows selective permeability: small nonpolar molecules diffuse easily, while ions and polar molecules require protein channels or carriers.
5. The fluid mosaic model describes this dynamic arrangement, where components can move laterally within the plane of the membrane.
Parent Tip: Review the logic above to help your child master the concept of cell membrane coloring worksheet answer key biology junction.
