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1. prevents some substances from passing through the membrane but lets other molecules move through
L V E L A L E E S I P C B Y E T E E M R
2. Molecules that cannot freely pass through the membrane must cross through one of the ____________ embedded in it.
T E R S N P I O
3. Substances that can move into and out of a cell do so by means of either passive or active ___________.
O S T R P A R T N
4. The movement of materials through the membrane without the use of cellular energy
A I P O A R P R S V T E T S N S
5. small molecules can move freely across the cell membrane from areas of high concentration to areas of lower concentration
S N I I F O D U F
6. water crosses the cell membrane easily by ....
S M S S O O I
7. A material that enters and leaves the cell by diffusion
X G E Y N O
8. A material that enters and leaves the cell by diffusion
E O O A N X I D I R D B C
9. Molecules that cannot move through the cell membrane can diffuse through specialize protein channels in a process called...
D E F A F C I F I N L I T A U S O T I D
10. Uses cellular energy to move materials through the cell membrane
V T R A T R P I O E N T S A C
11. proteins in the cell membrane that can move small molecules from an area of lower concentration to a region of higher concentration
O T E R O N I S P R S T N T P R A
12. a type of active transport that moves materials that are too large to pass through transport proteins where the cell membrane changes shape to engulf particles
I O S T D O C S E N Y
13. Moves large materials where vacuoles fuse with the membrane to expel large particles
I O C X S E Y O S T
14. What is made of a double layer of lipids?
R N M E L L C A E E B M
15. What controls the materials that move into and out of a cell?
N M C E E A E L M L R B