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Which Correctly Describes The Fluid-Mosaic Model Of The Cell Membrane

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Small, neutral molecules diffusing across a membrane? requires passive transport requires no energy requires active transport requires both a and b

Which correctly describes the plasma membrane? fluid and nonpermeable rigid and nonpermeable fluid and partially permeable fluid and completely permeable

Which component of the phospholipid bilayer is considered hydrophobic?

phospholipid head phospholipid tail phospholipid head and tail none of the above

Which correctly describes the fluid-mosaic model of the cell membrane?

phospholipid monolayer with embedded proteins phospholipid bilayer with embedded proteins phospholipid monolayer with embedded triglycerides cholesterol bilayer with embedded proteins

This process uses a carrier protein …show more content…
channel protein symporter antiporter uniporter The sodium-potassium pump, a process that carries sodium out of a cell and potassium into a cell, is considered what type of process?

active transport facilitated diffusion passive transport osmosis An amphipathic molecule would be described as a molecule that has:

a hydrophilic region a hydrophobic region both a and b neither a or b

The major functions of the cell membrane do NOT include which of the following?

a. regulation of molecules and ions that pass into and out of the cell production of proteins used in construction of the cell wall
c. protect the cell from its surroundings
d. recognition and communication between different cells and tissues

Whether a molecule can cross the cell membrane depends on what factor?

the charge of the molecule the size of the molecule the chemical properties of a molecule
All of the above

A phospholipid molecule has a head and two tails. The tails are found where?

spanning the membrane in the interior of the membrane at the surface of the membrane in the hydrophilic region

A hypertonic solution is one whose concentration is?

is lesser than that inside a cell is equal to that inside a cell is greater than that inside a

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