Cell Transport
Chris French, James Graessle, Mo
Hnaino, Megan Pokal
Vocab
• Diffusion: Process by which molecules tend to
move from an area where they are more
concentrated to an area where they are less
concentrated.
• Passive Transport: Movement of material
down the concentration gradient.
• Active Transport: Energy-requiring process
that moves material across a cell membrane
against a concentration difference.
• Osmosis: Diffusion of water through a
selectively permeable membrane.(passive)
• Endocytosis: Process by which a cell takes
material into the cell by infolding of the cell
membrane.(active)
• Exocytosis: Process by which a cell releases
large amounts of material.(active)
• Isotonic: When the concentration of two
solutions is the same.
• Hypertonic: When comparing two solutions,
the solution with the greater concentration of
solutes
• Hypotonic: When comparing two solutions,
the solution with the lesser concentration of
solutes.
• Facilitated Diffusion: Movement of specific
molecules across cell membranes through
protein channels.
• Channel Protein: Form channels to allow
specific molecules to flow through.
• Carrier Protein: Change shape to allow a
substance to pass through the membrane.
Cell Membrane
Simple Diffusion
Facilitated Diffusion-Channel
Facilitated Diffusion-Carrier
Osmosis
Endocytosis
Exocytosis
Hypotonic, Isotonic, and Hypertonic
Solutions
10 Review Questions
• 1. Diffusion of water through a selectively
permeable membrane.
– Faciliated
– Osmosis
– Endocytosis
Process by which a cell takes materials into the
cell by an infolding in the cell membrane.
A. diffusion
B. endocytosis
C. osmosis
3. The solution with the lesser concentrated of
solutes.
A. Electrons
B. Hypotonic
C. Isotonic
4. The process by which molecules move from
an area of high concentration to low
concentration.
A. Diffusion
B. Atom
C. Gene
5. the movement of material down the
concentration gradient requires. No energy from
the cell.
A. Isotonic Transport
B. Active Transport
C. Passive Transport
6. When the concentration of two slotuions is
the same.
A. Isotonic
B. Endocytosis
C. Osmosis
7. Cells have genetic material that is not
contained in a nucleus.
A. Eukaryotes
B. Nucleus
C. Prokaryotic
8. Cells contain a nucleus in the which their
genetic material is separated from the rest of
the cell.
A. Cytoplasm
B. Eukaryotic
C. Multicellular organism
9. What regulates what enters and leaves the
cell and also provides protection and support?
A. Lipid Bilayer
B. Cell Membrane
C. Cell wall
10. The composition of nearly all cell
membranes is a double-layered sheet.
A. Lipid Bilayer
B. Cell Wall
C. Plant
D. Atom
Answers to Review
1. B
2. B
3. B
4. A
5. C
6. A
7. C
8. B
9. B
10. A