cellular transport Flashcards
“gatekeeper of the cell”
Cell membrane
explain ph levels
0-6 acidic
8-14- basic
7 neutral
all cells have cell membrane made of ______, _______, and _______. That’s why it’s called Phospholipid Bilayer.
Phosphate, proteins, lipids
A single phospholipid has _______ phosphate heads and _______fatty acid tails
Hydrophilic (water loving)
Hydrophobic (water hating)
a process that doesn’t require energy
passive transport
HIGH to LOW concentration transport
Passive
is the movement of small particles across the cell membrane.
diffussion
requires the help of carrier& channel proteins
facilitated diffusion
is the movement of water through a selectively membrane like the cell membrane
osmosis
high concentration of solute relative to another solution. The water diffuses ____ of the cell, causing it to _____
Hypertonic solution
out, shrivel
low concentration of solute. the water diffuses _____ the cell, causing the cell to _____ and possibly ______.
Hypotonic solution
into, swell, explode
contain the same concentration of solute, the water diffuses _____ of the cell.
Isotonic solution
into&out
transport that uses energy
Active transport
how materials exit the cell
exocytosis
how materials enter the cell
endocytosis
cell drinking material. how small materials enter the cell.
Pinocytosis
cell eating material. how larger materials enter the cell.
Phagocytosis
proteins that work as pumps are called _______
protein pumps
Explain the bulk transport
accomplished by endo&exocytosis.
endo= phago&pino
