FILL IN THE BLANKS
Minerals enter a root cell by _________
active transport
The steeper the gradient is , the rate of diffusion will be
a=same
b= slower
c=faster
c= faster
what is the function of osmosis in a plant tissue?
supports the plants by the pressure of water inside cells pressing outwards on the cell wall
The ______ the surface area, the higher the rate of diffusion
larger
what causes the diffusion of carbon dioxide out of a living cell?
a=active transport
b= random movement of molecules
c= respiration
b= random movement of molecules
what is the definition of active transport?
Active transport is the movement of molecule from region of low concentration to a region of high concentration against a concentration gradient.
Osmosis is the diffusion of water molecules from a ____ concentration solution to ____ concentration solution, across a partially-permeable membrane.
1-low
2-high
how does a water vapour molecule move out of the air space of a leaf into the atmosphere on a dry day?
a= active transport
b=diffusion
c= evaporation
b= diffusion
what are the Factors affecting the rate of diffusion. name 4
Surface Area
temperature
concentration gradient
distance