In diffusion, molecules do this.
What is spread out?
Two creatures that build dams are ___________ and ____________.
What are beavers and humans?
A solution that causes a cell to get bigger is _________.
What is hypotonic?
The cell membrane ____________ let some things through.
What is 'does'?
A dam impacts fish by __________ the river.
What is blocking?
A solution that shrinks cells is ____________.
What is hypertonic?
These are the two types of cell transport.
What are active and passive transport?
The cell membrane ___________ repair itself.
What is can?
What is 'allows'?
A solution that causes cells to stay the same size is ___________.
What is isotonic?
This type of cell transport needs energy.
What is active transport?
These are two properties of the cell membrane.
What are 'flexible', 'fluid', or another reasonable answer?
These are two types of fish passages.
What are fish ladder and fish lift?
In active transport, substances move from _________ to ________ concentration.
What is low to high?
This part of the cell membrane acts like a "doorway" to allow large things to go in and out of the cell.
What is channel protein or protein?
Salmon swim upriver in order to __________.
What is 'spawn'?