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Get through the membrane! Diffuse through the bilayer Or protein channel In active transport Cells use energy to pump Up a gradient Endocytosis Engulf particles or prey Into vesicles Exocytosis…

Crossing the membrane Through the lipid bilayer Simple diffusion Facilitated Diffusion using channels To enter the cell Fighting gradients Cell energy is required In active transport

The phospholipid Polar head, non-polar tail Such duality! Heads hydrophilic Tails avoiding water So hydrophobic Immersed in water A phospholipid bilayer Self organizes

View it from the Membrane's page.

ER Makes protein Which the Golgi modifies And then distributes

In a redwood grove Tall trees, needles, scent of pine Sequestered carbon Chickadee, nuthatch Descendants of dinosaurs So well adapted Stream flowing, gurgling Water moving to the Bay An endless…

Mitochondria Little endosymbionts Making ATP

You can look at the crossword puzzle below, or you can view it on the enzyme's song page.