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Life Science Review 4.1
Test Description: Exchange with the Environment
Instructions: Answer all questions to get your test result.
1) What molecules can get through the cell membrane directly?
A
water
B
sugar
C
lipids
D
protein
2) ____________ allow small particles in and out of the cell
A
protein channels
B
lipid channels
C
tv channels
D
sugar channels
3) Diffusion is the movement of particles across a membrane from a ____ concentration to a ____ concentration
A
low; low
B
high; high
C
high; low
D
low; high
4) Which is not a form of passive transport
A
osmosis
B
simple diffusion
C
facilitated diffusion
D
none of the choices
5) __________ is the movement of small particles across a membrane with the use of energy
A
endocytosis
B
exocytosis
C
active transport
D
passive transport
6) If red blood cells are placed in a solution of salt water, the water concentration outside the cell will be___ and water will leave the cell
A
high
B
balanced
C
low
D
none of the choices
7) Large particles come into the cell through ___________
A
passive transport
B
exocytosis
C
active transport
D
endocytosis
8) Large particles leave the cell through
A
exocytosis
B
active transport
C
passive transport
D
endocytosis
9) Energy is needed to move particles from an area of _____ concentration to an area of ____ concentration
A
high; high
B
low; high
C
high; low
D
low; low
10) The cell membrane is made of
A
all of the choices
B
sugars
C
phospholipids
D
water
*select an answer for all questions
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