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Water Potential, Diffusion And Active Transport

17 Questions  I  By Nuzzzzie
Energy Quizzes & Trivia
A quiz on water potential, diffusion, active transport and other cellular transport.
HUMAN BIOLOGY AS LEVEL

  
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1.  Diffusion is the ____ _________ of a substance from a region where it is in ______ concentration to a region where it is in ______ concentration.
2.  Diffusion is said to be a _______ process.
3.  What can not diffuse through the phospholipid bilayer?
A.
B.
C.
4.  Facilitated diffusion is the diffusion of molecules through the plasma membrane with the help of ________. Some of these are protein _______ that are permanently open. They are lined with _____philic amino acids and water. Molecules can also diffuse through the membrane by binding to ______ proteins.
5.  What kind of process is facilitated diffusion?
A.
B.
6.  Osmosis is the movement of ______ molecules from a region of _____ water potential to a region of _____ water potential.
7.  Pure water has the highest  possible water potential of ___ .
8.  Adding solutes to water ______ the water potential, for example it makes the water potential more ______.
A.
B.
C.
D.
9.  Osmosis occurs until the water potential is the same on both sides of the membrane. At this point, ___________ has been reached.
10.  A solution with the same water potential as a cell is said to be _______ with the cell.
11.  A solution with a lower water potential than the cell is said to be __________.
12.  A solution with a higher water potential than the cell is said to be _________.
13.  Glucose and other solutes will dissolve in blood plasma and ______ the water potential but it is mainly the concentration of electrolytes in plasma and in cells that is responsible for maintaining a water potential ________. Electrolytes are ions with a positive or negative _______. Positively charged ions are called _______ and those with a negative charge are called _______.
14.  Diffusion, osmosis and facilitated diffusion go ______ the concentration gradient.
A.
B.
15.  Active transport is the movement of a substance across a cell membrane ______ its concentration gradient, using energy from ___.
16.  Exocytosis is...?
A.
B.
17.  Endocytosis is...?
A.
B.
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