6. A number of different transport mechanisms were discussed in this section of

Question

6. A number of different transport mechanisms were discussed in this section of the class. For each of the classes of transport given below, provide the requested information using the table below. (12 pts) Uniport, symport or Describe the steps of the Type of What is transported? What type of TransportThis is a specific mediator is used for antiport and explain transport process. Give the example of facilitated diffusion (1 pt each) this transport? Be (0.5 pt each) specific as to whether gate, pore, successive steps in the process. (2 pts each) transport protein, etc. (0.5 pt each) Facilitated diffusion (type answer here) [type answer here] [type answer here) [type answer here Primary Activetype answer here) [type answer here) (type answer here) (type answer here) Transport Secondary Active [type answer here] type answer here] type answer here] type answer here] transport

Explanation / Answer

1. Carrier Mediator

2. Channel Mediator

1. Molecule attaches to carrier protein

2. Carrier protein changes shape to protect the molecule from cell membrane

3. The molecule is released on other side

4. Carrier protein returns to it's original shape

Pump mediated

Involves the direct use of metabolic energy i.e ATP  

1. Interior is opened and attach to their binding sites

2. Change it's shape and interior is closed

3. Ions are released

4. Ions enter and attach to binding sites

5. Change the shape again and only open to interior

Carrier Mediated

Involves coupling the molecule with another moving along with electrochemical gradient

Type of transort What is transported What type of mediator is used Uniport, symport or antiport Steps of transport Facilitated Diffusion The transport of molecules across the plasma membrane from higher concentration to lower concentration

1. Carrier Mediator

2. Channel Mediator

Uniport ( Transport of molecules in one direction across membrane)

1. Molecule attaches to carrier protein

2. Carrier protein changes shape to protect the molecule from cell membrane

3. The molecule is released on other side

4. Carrier protein returns to it's original shape

Primary Active Transport The transport of molecules against concentration gradient

Pump mediated

Involves the direct use of metabolic energy i.e ATP  

Uniport ( Transport of molecules in one direction across membrane)

1. Interior is opened and attach to their binding sites

2. Change it's shape and interior is closed

3. Ions are released

4. Ions enter and attach to binding sites

5. Change the shape again and only open to interior

Secondary Active Transport The transport of two different molecules across transport membrane

Carrier Mediated

Involves coupling the molecule with another moving along with electrochemical gradient

Antiport ( protein moves in opposite direction) and symport ( protein move in same direction) Same as primary transport but they I coupling of molecules along with electrochemical gradient

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