Activity 4 Cell Membrane Flashcards
____the movement of solute molecules from an area of higher concentration to an area of lower concentration.
Water moves across the cell membrane by ___
Diffusion
Osmosis
___ lipid–protein assemblies in which the components are held together in a thin sheet by ____ bonds
Membranes
non-covalent
Lipid molecules are insoluble in water but dissolve readily in ____.
organic solvents
Causes bilayers to form spontaneously
amphipathic
Special characteristics of the lipid bilayer (2)
Hydrophobic core
-impermeable barrier with membrane proteins
Stability
- done bt rhe van der Waals interactions
Components of cell membrane (3)
1000 mL water
500 mL glycerol
600 mL liquid soap
Drop water at the center of the bubble
Making a bubble near it
Separating the bubbles
Moving the straw upward and downward
Dropping paperclips and dice inside the string
pinocytosis
Fusion
Fission
Flexibility
Phagocytosis
Pigment in Red Onion Cells that come out when cell membranes dissolve
This is also called
anthocyanin
Dissolution
Penetration coefficient:
molar concentration of the alcohol / time of pigment appearance
most penetration to least penetration
Methanol
Ethanol
n-Propanol
n-Butanol
n-Amyl alcohol
Molecular weight
Methanol
Ethanol
n-Propanol
n-Butanol
n-Amyl alcohol
Methanol - 32.04
Ethanol - 46.07
n-Propanol - 60.09
n-Butanol - 74.12
n-Amyl alcohol - 88.15
VInegar is ___
Eggshells are ___
They make ___
Acetic acid
Calcium Carbonate
Calcium acetate
Coming together of two different things into one unit
Division of a single cell to daughter cells
Cells engulf big particles such as bacteria, dead cells, or foreign objects
Engulfing tiny liquid droplets through the vesicles
Fusion
Fission
Phagocytosis
Pinocytosis
Methanol affects cells fastest because it is ___ and ____
N-amyl alcohol is the slowest because it has a ___
Polar and soluble
Longer hydrophobic tail
