Cell Membrane Transport Worksheet KEY Exemplar
A worksheet reviewing key concepts of cell membranes and transport, including diffusion, osmosis, active transport, and membrane structure. Covers vocabulary and processes essential for understanding how substances move in and out of cells.
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Name Answer Key Date Per
Reviewing the Concepts: The Cell M e m b r a n e and Cell Transport
Part I. V o c a b u l a r y Practice: Use rhe word bank below to iW in the blanks. AU words will be used.
Osmosis Diffusion Permeable Facilitated Phospholipids Hydrophobic Proteins
Cholesterol Active Transport Phagocytosis Exocytosis Hydrophilic Simple
1. Th e dillusion of waie r ac toss th e cell m embran e i s callee osmosis
2. The cell membrane is described as selectively permeable a s o n |y pe r m jts certain
molecules to pass through. It is composed of a bilayer of phospholipids , with proteins
embedded within.
3. D iff .is i o - s the movement of molecules from high concentration to low concentration
across the cell membrane, while active transport moves molecules against their
concentration gradient.
4. With simple diffusion, molecules can pass di rectly through the phospholipid bilayer, while
with facilitated diffusion, molecules pass through a membrane protein.
5. hole sterol jS embedded within the cell membrane in crder to prevent the phospholipids
from sticking together.
6. Each phospholipid is composed of a water-loving, or hydrophilic phosphate head and
a water-fearing, or hydrophobic lipid tail.
7. Phagocytosis is a form of active transport which takes in food particles by engulfing them.
The opposite of this process is called exocytosis
Part I I . D i a g r a m L a b e l i n g
Using the word bank, label the diagram of
the cell membrane.
Phosphate Head
Lipid Tail
Transport Protein
Cholesterol
Receptor Protein
Reviewing the Concepts: The Cell M e m b r a n e and Cell Transport
Part I. V o c a b u l a r y Practice: Use rhe word bank below to iW in the blanks. AU words will be used.
Osmosis Diffusion Permeable Facilitated Phospholipids Hydrophobic Proteins
Cholesterol Active Transport Phagocytosis Exocytosis Hydrophilic Simple
1. Th e dillusion of waie r ac toss th e cell m embran e i s callee osmosis
2. The cell membrane is described as selectively permeable a s o n |y pe r m jts certain
molecules to pass through. It is composed of a bilayer of phospholipids , with proteins
embedded within.
3. D iff .is i o - s the movement of molecules from high concentration to low concentration
across the cell membrane, while active transport moves molecules against their
concentration gradient.
4. With simple diffusion, molecules can pass di rectly through the phospholipid bilayer, while
with facilitated diffusion, molecules pass through a membrane protein.
5. hole sterol jS embedded within the cell membrane in crder to prevent the phospholipids
from sticking together.
6. Each phospholipid is composed of a water-loving, or hydrophilic phosphate head and
a water-fearing, or hydrophobic lipid tail.
7. Phagocytosis is a form of active transport which takes in food particles by engulfing them.
The opposite of this process is called exocytosis
Part I I . D i a g r a m L a b e l i n g
Using the word bank, label the diagram of
the cell membrane.
Phosphate Head
Lipid Tail
Transport Protein
Cholesterol
Receptor Protein
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