test Flashcards
what are three types of passive transport?
Osmosis, Simple Diffusion, and Facilitated Diffusion
What is active transport?
when a cell uses energy to transport something( LOW TO HIGH CONCENTRATION USING ATP)
Facilitated diffusion=
LARGE HYDROPHILLIC molecules pass through the bilayer with the help of carrier proteins OR protein channels create a passageway for them to get through
Where does facilitated diffusion come and go
from areas of higher concentration to areas of lower concentration
what is the goal of facilitated diffusion
to achieve homeostasis both inside and outside the cell
Simple Diffusion=
SMALL, HYDROPHOBIC molecules slip through the bilayer
Where does simple diffusion come and go
from areas of higher concentration to lower concentration
what is the goal of Simple Diffusion
to achieve homeostasis
Osmosis=
FLUIDS and GASSES pas through the bilayer
Where does simple diffusion come and go
the fluids move from area of low concentration to areas of higher concentration (of solutes)
what is the goal of Osmosis
to dilute the high concentration area (of solutes) TO ACHIEVE HOMEOSTASIS
How do the carrier proteins take the molecules through the membrane
the carrier proteins latch onto the molecules and pull them through the bilayer
what are the THREE main concepts of CELL THEORY
1) Cells come from other cells
2) All living things are made up of cells
3) The cell is the basic unit of life
Know the Hydro Phobic and Phillic parts of the bilayer
The HEAD is: Hydrophilic (attracts/likes water)
The TAIL is: Hydrophobic (does not like water)
Whats happens to cells when they get too big
they burst and stop functioning because the nutrients cant reach the whole cell
