What is the role of Iron (Fe) in a Cell? - answer✔Cellular Respiration
How do Siderophores attain Iron? - answer✔Bind Iron from minerals and transport it into the
cell
What are examples of Growth Factors? - answer✔Vitamins, amino acids, purines and
pyrimidines
What do Transport Proteins do? - answer✔They accumulate solutes against the concentration
gradient
How do transport proteins affect the rate of solute entry? - answer✔The increase the rate of
solute entry
What are Properties of Transport Proteins? - answer✔1. Show a Saturation effect
2. Have high Specifcity
3. Synthesis is regulated by the cell
What is a Saturation Effect? - answer✔Saturation is a combination of two distinct but related
effects. Allows two effects to happen in tandom.
What are the 3 Transport Mechanisms in Prokaryotes? - answer✔1. Simple Transport
2. Group Transport
3. ABC Transport.
What is Simple Transport in Prokaryotes? - answer✔The movement of a substance into the cell
that is driven by the energy of a proton motive force. ie uses H+ as energy.
What is Group Transport in Prokaryotes? - answer✔The movement of a substance into the cell
that chemically modifies the transported substance using phosphoenolpyruvate.
What is ABC Transport in Prokaryotes? - answer✔The movement of a substances into the cell
that involves periplasmic binding proteins and uses ATP as the energy source
What does the channel formed in Simple Transport consist of? - answer✔12 α-helices
What are the Three mechanisms of Simple Transport? - answer✔1. Uniporter
2. Antiporter
3. Symporter
What is a Uniporter? - answer✔Transports one substance in one direction
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