Osmosis Flashcards
Movement of water from low to high concentration
Osmosis
The movement of water across the membrane from low to high concentration
Diffusion
The movement of molecules from a higher to lower concentration
Features of the cell membrane
Phospholipids/hydrophobic tails
Glycoproteins
Glycolipids
Transport proteins
What is passive transport
It doesn’t require energy
What is active transport
Requires energy
Phospholipids
The head, loves water, faces outward to interact with other liquids
Glycolipids
Helps maintain the stability of the cell, important for cell recognition, connecting cells to form tissues and immune response
Hydrophobic tail
Inside the cell, selectively controls what goes in and out by creating a barrier between the inside and outside of the cell. Doesn’t like water
Glyco proteins
Crucial role in cell-cell recognition, adhesion and acting as surface markers on the cell membrane
Transport proteins
Selectively allows certain molecules to pass through, controls what enters and exits
Calculate the FOV
Eyepiece diameter divided by objective lens
Total magnification
Eyepiece lens x objective lens
Percentage diffusion
Percentage diffusion = (diffused volume / total volume) x 100
Percentage change
New number x original number divided by original number times by 100
Surface area to volume
Surface area x volume
Transport processes within the cell membrane
Passive and active transport
