All cells are surrounded by it.
What is a cell membrane?
This term describes the free movement of small, non-polar molecules across the cell membrane.
What is passive transport?
The act of materials moving against the concentration gradient.
What is active transport?
Osmosis is the diffusion of this type of molecule across a cell membrane.
What is a water molecule?
This 19th century Austrian priest is known as "the father of genetics."
Who is Gregor Mendel?
The barrier surrounding cells is made up of a double layer of lipids, also known as this.
What is a lipid bilayer?
Particles are moving across a membrane equally in both direction, no net change.
What is equilibrium?
This is required to move molecules to a high concentration.
What is energy?
These special channels facilitate the movement of water molecules across the cell membrane.
What are aquaporins?
This structure made mostly of protein surrounds plant, fungi, and prokaryotic cells.
What is a cell wall?
These structures form channels and pumps to move molecules into and out of the cell.
What is a membrane protein?
The net movement of particles from a HIGH to LOW concentration.
What is diffusion?
Forcing contents out of a cell by fusing it to the cell membrane.
What is exocytosis?
This state of a molecule prevents it from being able to directly pass through the cell membrane. (Not the bear kind)
What is polar?
The 3rd president of the United States.
Who is Thomas Jefferson?
Some substances can cross the cell membrane freely while others are selectively prohibited.
What is semi-permeable?
This specialized type of passive transport only applies to water molecules.
What is osmosis?
These use ATP to "pump" ions across the cell membrane.
What are protein pumps?
In a hypertonic solution, the solute concentration is greater outside of the cell. The net movement of water molecules causes the cell to do this.
What is shrink?
Ms. Spatter's first name.
What is Alexandra?
This binomial term is used to describe the dynamic nature and composition of the cell membrane.
What is a fluid mosaic?
Facilitated transport is best for these types of molecules.
What are large and polar molecules?
The analogy that Ms. Spatter used when describing active transport.
What is walking on an escalator traveling in the opposite direction?
In plants, this term describes the pressure of the cell membrane pushing against the cell wall.
What is turgor pressure?
The name of this molecular police officer.
Who is Osmosis Jones?