Download AP10 Ch3-b Transport-2015

PowerPoint® Lecture Slide Presentation
by Patty Bostwick-Taylor,
Florence-Darlington Technical College
Cells and
Tissues
3
PART B
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Solutions and Transport
 Solution
 Solvent =
 Solutes =
 Intracellular fluid =
 Interstitial fluid =
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Plasma Membrane & Selective Permeability
 Selective Permeability
 Effect on Transport
 2 Methods
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Passive Transport Processes
 1. Diffusion
 = ____To____
 Concentration
Gradient
 Equilibrium
EQUILIBRIUM
Figure 3.9
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Passive Transport Processes …
PLAY Diffusion
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Passive Transport Processes
Types of diffusion …
 Osmosis =
PLAY Osmosis
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Passive Transport Processes
 2. Facilitated diffusion
 protein carrier
 Substances transported =
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Passive Transport Processes
Figure 3.10b–c
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Passive Transport Processes
 3. Filtration
 Force
 Pores in membrane
 pressure gradient
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Active Transport Processes
 Energy =
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Active Transport Processes
 1. Active transport
 Substances: Amino acids, some sugars, ions
 pumps
Na+
Na+
 LOW to HIGH
PUMP
Na+
Na+
Na+
P
ATP
ADP
PLAY Active Transport
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Na+
P
Extracellular fluid
Sodium-Potassium Pump
Na+
Na+
Na+
P
ATP
ADP
Binding of cytoplasmic Na+
to the pump protein
stimulates phosphorylation
by ATP, which causes the
pump protein to change its
shape.
Cytoplasm
Figure 3.11, step 1
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Extracellular fluid
Na+
K+
Na+
P
Na+
P
Na+
Na+
K+
Na+
P
ATP
ADP
Binding of cytoplasmic Na+
to the pump protein
stimulates phosphorylation
by ATP, which causes the
pump protein to change its
shape.
The shape change expels
Na+ to the outside.
Extracellular K+ binds,
causing release of the
phosphate group.
Cytoplasm
Figure 3.11, step 2
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Active Transport Processes …
 2. Vesicular transport =
 Exocytosis = Substances move ___________
Exocytosis
PLAY
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Active Transport Processes: Exocytosis
Figure 3.12b
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Active Transport Processes …
Vesicular transport …
 Endocytosis = moves substances _______
 Phagocytosis:
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Cell Life Cycle
 Two major periods
 Interphase = Cell carries on metabolic processes
 Cell division
 Mitosis
 Meiosis
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