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Life Science-Section 3A

Across
3A: Cell (blank)
Only water across a membrane, filter, etc.
Requires the cell's energy.
Understanding cell membranes is (blank).
Won't easily pass through the membrane.
We learn what a cell needs to (blank) alive.
The 'head' that likes to be in water.
Depicts membranes as a liquid.
Comes right OUT of the cell.
One way to speed up diffusion.
Picky.
The ability to get to the other side.
Helps water go backwards.
What kind of 'layer' is a cell membrane?
The study of cells.
It tells us how a cell interacts with its (blank).
Follows salt.
Down
Made of substances with irregular shape & different patterns.
Without the cell's energy.
It tells us how a cell (blank).
Avoiding water is hydro(blank).
A thin covering that forms the outer boundary of a cell.
Example of a very small substance.
Can occur In air or in liquid; no membrane necessary.
What determines the selectivity of a membrane?
Chapter 3: Cell (blank)
The cell membrane is still considered a special lipid known as a (blank) bilayer.
Water naturally flows from a high to low (blank).
Example of a very small substance.
Going backwards!
Movement either in or out across a membrane.