Post on 29-Dec-2015
transcript
Outsideof cell
Insideof cell(cytoplasm)
Cellmembrane
Proteins
Proteinchannel
Double Fat Layer
Carbohydratechains
Parts of the Cell Membrane
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Homeostasis
• Maintenance of a stable internal condition
• Balance
Vocab
• Vesicle:– Membrane-covered
compartments that forms when part of the cell membrane surrounds an object and pinches off
Diffusion
Diffusion
Definition: Movement of small particles from an area of high
concentration to an area of low concentration, like oxygen
Diffusion
Definition: Movement of small particles from an area of high
concentration to an area of low concentration, like oxygen
High
Low
Diffusion
Definition: Movement of small particles from an area of high
concentration to an area of low concentration, like oxygen
High
Low
Diffusion
Definition: Movement of small particles from an area of high
concentration to an area of low concentration, like oxygen
High
Low
Requires NONO ATP (energy), moves
only small particles
Diffusion
Definition: Movement of small particles from an area of high
concentration to an area of low concentration, like oxygen
High
Low
Requires NONO ATP (energy), moves
only small particles
Osmosis: the
diffusion of water
Passive Transport
Passive Transport
Definition: the movement of medium particles from an area
of high concentration to an area of low concentration through a
protein channel
Passive Transport
Requires NONO ATP (ENERGY)
Definition: the movement of small & large particles from an
area of high concentration to an area of low concentration through a protein channel
Passive Transport
Requires NONO ATP (ENERGY)
Definition: the movement of medium particles from an area
of high concentration to an area of low concentration through a
protein channelJust like diffusion but through a protein
Passive Transport
Definition: the movement of med. particles from an area of
high concentration to an area of low concentration
Requires NO ATP (ENERGY)
Just like diffusion but through a protein
Low
High
Passive Transport
Definition: the movement of med. particles from an area of
high concentration to an area of low concentration
Requires NO ATP (ENERGY)
Just like diffusion but through a protein
Low
High
Active Transport
Active Transport
Definition: the movement of medium particles from an area of low concentration to an area of high concentration through a
protein channel
Active Transport
Definition: the movement of med. particles from an area of low concentration to an area of
high concentration through protein channel
Requires ATP (ENERGY)
Active Transport
Definition: the movement of med. particles from an area of low concentration to an area of high concentration through a
protein channel
Requires ATP (ENERGY)
Similar to Passive Transport but requires energy
Active Transport
Definition: the movement of med. particles from an area of low concentration to an area of
high concentration
Requires ATP (ENERGY)
Low
High
Similar to Passive Transport but requires energy
Active Transport
Definition: the movement of sm. & lg. particles from an area of low concentration to an area
of high concentration
Requires ATP (ENERGY)
Low
High
Energy
Similar to Passive Transport but requires energy
ENDOCYTOSIS
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
Step 2: the cell membrane begins to wrap around the particle
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
Step 2: the cell membrane begins to wrap around the particle
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
Step 2: the cell membrane begins to wrap around the particle
Step 3: once the particle is completely surrounded, a vesicle pinches off
ENDOCYTOSIS
Definition: the cell taking in particles by surrounding the particle and enclosing it in a vesicle
Step 1: the cell comes into contact with a particle
Step 2: the cell membrane begins to wrap around the particle
Step 3: once the particle is completely surrounded, a vesicle pinches off
Endocytosis
EXOCYTOSIS
EXOCYTOSIS
Definition: Vesicles formed by the Golgi carry particles to the cell membrane to be removed
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
Step 2: the vesicle travels to the cell membrane and fuses with it
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
Step 2: the vesicle travels to the cell membrane and fuses with it
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
Step 2: the vesicle travels to the cell membrane and fuses with it
Step 3: the cell release the particles into its environment
EXOCYTOSIS
Definition: Vesicles formed by the Golgi or ER carry particles to the cell membrane to be removed
Step 1: large particles that must leave the cell are packaged in vesicles
Step 2: the vesicle travels to the cell membrane and fuses with it
Step 3: the cell release the particles into its environment
Review Transportation Through a Membrane
• Diffusion
• Osmosis
• Facilitated Diffusion
• Active Transport
• Endocytosis
• Exocytosis