Thursday, August 27, 2009

Answers in the Quiz on Transport Proteins


Objective Part:
1. Carrier proteins & 2. Carrier molecules . What are the other terms used that also imply to Transport Proteins?

3.Active transport is a type of protein substrate transport that requires chemicals or cellular energy to mediate a specific solute.

4. Passive transport is a type of protein substrate transport that passively travels biochemicals or molecular substances with the flow of the solvent across the cell membrane .

5. – 10. True or False:

True. The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules which it has a certain binding affinity.

True. Transport protein or Carrier molecules are generally firmly packed with polar region on the outside.

True. Polar regions from the outside of some specific molecules are utilized to intensify the solubility in water of most substance in the body that do not dissolve in water.

False. Via Transport Proteins, the substrate will be discharged at the appropriate site and all steps are irreversible.

False. After the substrate has associate to the transport protein molecule, it will take in and temporarily alter its molecular and chemical structure.

False. Transport proteins or Carrier molecules do not initiate the body regulation of the amount of specific biochemical processes.

Analysis Part:

Explain briefly how specific transport proteins recognize specific substances and the processes that occur or that are involved in the transportation of appropriate molecules.

The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules which it has a certain binding affinity. Each transport protein is very specific that are designed to recognize only one specific substance or one group of very similar substances.
After the substrate has associate to the transport protein molecule, it will take in and retain the substrate within its molecular structure and cause an internal shift for the substrate to face the other side of the carrier membrane. The substrate will be discharged at the appropriate site and all steps are reversible.


Photo source: pickaniche.com

2 comments:

  1. One of the first ones to submit, noted. K.I.U.!

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  2. Very interesting post. Thanks for sharing it! It is always a joy to learn something that I didn't know. I have you to thank for teaching me something new, and I appreciate it very much. :-)

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