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Human Physiology Chapter 3 worksheet 1

Across
Molecules that fit between the lipid tails in a cell membrane.
Have a polar head region and non-polar tail region that arrange into a bilayer.
Proteins that are either attached to the outside or inside of the lipid bilayer.
Composed of fibrous proteins such as collagen, elastin, and fibronectin.
Substances can pass directly through the membrane.
Communicating junctions linking adjacent cells by small connecting tunnels formed by connexons.
What is being dissolved.
Proteins that are embedded in the lipid bilayer, membrane spanning.
Down
Only found on the extracellular surface of the plasma membrane and serve as self-identity markers.
Impermeable junctions that bind touching adjacent cells firmly together, usually found in sheets of epithelial cells.
Specialized proteins on cell membranes that hold the adjacent cells together. abbreviation
Adhering junctions that anchor two adjacent, yet non-touching, cells.
Carbohydrates attached to lipids
Carbohydrate attached to proteins.
Model that describes the cell membrane as a flexible lipid bilayer embedded with freely floating proteins.
Dissolving medium.
Integral membrane proteins that serve as channels in the transfer of water.