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22 Cards in this Set

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  • Back
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Cytoplasm

Interior contents of a cell

1. Jelly substance


2. "Try to pull a fast one the ________ gels!"

Phospholipids

Lipids that make up a big part of the cell membrane

1. Make up the membrane


2. Make a ______ bilayer

Phospholipid Bilayer

Polar heads facing out and non polar tails facing inward

1. 2 layers

1. 2 layers

Polar

Slight charge

1. Water is a ______ molecule


2. ______ heads facing out

Nonpolar

Neutral charge

1. Gas is _______


2. _________ tailed facing inward

Transport Proteins

Help transport large polar molecules and ions through the membrane

1. Big ions and polar molecules need _____ to pass.


2. Span the bilayer

Selective Permeability

Allows certain things through the membrane.

1. Somethings can pass! Others cannot!


2. Phospholipid chant

Glycoproteins

Sugar+proteins

1. Receptor protein


2. Recieves chemical signals

Glycolipids

Sugar+fat

1. Receptor lipid


2. Receives chemical signals

Fluid Mosaic Model

Flexible structure of the cell membrane

1. Consists of phospholipid bilayer, transport proteins, and receptor proteins and lipids

1. Consists of phospholipid bilayer, transport proteins, and receptor proteins and lipids



Diffusion

Natural tendency of particles to move from an area of high concentration to an area of low concentration

1. Passive transport


2. Works only for a small polar and nonpolar molecules

Concentration Gradient

When there is a difference in The concentration of a substance across an area

1. Used by cells as a way to store potential energy


2. Used to carry out cellular process

Osmosis

Diffusion of water across a membrane from an area with high concentration of water to an area with low concentration of water

1. Rate depends on the surface area in size of concentration gradient


2. Hypo, hyper, iso.

Turgor

Stretch of cells due to absorbed fluids

1. Getting bigger


2. Stretching from to much water

Isotonic

Equal amount of water
1. Equal solute and water

1. Equal solute and water

Hypotonic

More water outside the cell, increase in turgor pressure, cell could burst
1. Cell could burst

1. Cell could burst

Hypertonic

More water inside the cell, water leaves and cell shrinks
1. Shrinking of cell

1. Shrinking of cell

Passive Transport

Movement of substances across the cell membrane

1. Diffusion, osmosis, facilitated diffusion.


2. Does not require energy

Active Transport

Movement of substances through transport protein that requires the use of energy
1. Requires energy

1. Requires energy



Facilitated Diffusion

Movement of large polar molecules and ions to transfer proteins

1. High concentration-low concentration


2. Absorbed by membrane

Endocytosis

Movement of very large substances into the cell by folding in sections of the cell membrane

1. Endo=in


2. Opposite of Exocytosis

Exocytosis

Movement a very large substances out of the cell

1. Exo=out


2. Done by folding