Quimica III

Buen día estudiantes del curso de Química III. Este curso se relacionara con el aprendizaje de la química orgánica con un enfoque hacia la química ambiental. La química orgánica es la rama de química encargada de estudiar los compuestos derivados del carbono a excepción de los compuestos inorgánicos con carbono como el diamante, carbonatos y demás derivados de estos. En la actualidad la química del carbono abarca unos 13 millones de compuestos químicos sintetizados, por lo cual se requirió esta división exclusiva para su estudio y total comprensión.  

 

Como método para incentivar el estudio de mis cátedras en los estudiantes, siempre me ha gustado recurrir a ejemplos prácticos y aplicativos del curso en la carrera respectiva. En el siguiente link se encontrara la página oficial de la EPA (Environmental Agency Protection) del gobierno de los estados unidos, que es la encargada de realizar las pruebas ambientales pertinentes a industrias, proyectos y de mas actividades humanas. En la sección que he seleccionado deben buscar los contaminantes orgánicos presentes en el agua y escoger uno de ellos para socializado de una manera rápida y concisa al principio de la clase... (5min). Llevaran una página con la información de la molécula, en la cual incluirán la información traducida del articulo correspondiente así como la estructura química de la misma. 

 

https://water.epa.gov/drink/contaminants/

Bioquímica 

Cordial saludo. Señores y señoritas estudiantes del curso de bioquímica, en esta página encontraran información respecto al curso. Desde aquí se montaran los talleres y prácticas de laboratorio para que las descarguen. Algunos temas que se traten aquí les servirán para relacionar lo aprendido con aspectos futuros de su carrera. Muchas gracias.  Aqui les dejo una breve introduccion de la importancia de la Bioquímica en las ciencias ambientales. 

 

Biochemistry's Role in Environmental Science

written by: nanjowe•edited by: Niki Fears•updated: 11/13/2009

Biochemistry and Environmental Science intersect when a living organism’s life processes are affected by the environment.

 

  • What is Biochemistry?

    Biochemistry is a multidiscipline field that studies the chemistry of life processes. These processes can be loosely divided into the following groups: reactions that are anabolic (build up molecules) or catabolic (break down molecules), chemistry of regulatory pathways (hormones and genes) and the chemistry of cell structure. At the cellular level the reactions include oxidation/reduction reactions, group transfer, hydrolysis, bond making and breaking reactions. On the systemic level the reaction represent pathways and processes in living system that are important in the energy transfer, biological information flow, protein structures, oxygen flow, and catalysis of reactions. These predefined reactions, processes, pathways and systems all function together enabling the living system to function normally.

     
     

  • Xenobiotics the Common Thread

    Biochemistry is used in Environmental Science when understanding the environment’s effect on living organisms as they interact with environmental pollutants. The pollutants sometimes referred to as xenobiotics can be ingested, inhaled or absorbed through the skin. Using biochemistry it is possible to study how the different pollutants behave once they are in the body. Where they are transformed, eliminated or stored and how this can affect the different biological process of a normally functioning organism. Xenobiotics studied include pesticides, hazardous wastes, synthetic and natural compounds.

     

     
     

  • Biochemistry in Environmental Science

    Through biochemistry we have been able to determine that some xenobiotics like PCB, Dioxins and DDT once in the body mimic hormones disrupting the body’s normal function. With this information the EPAOkayed the removal of polychlorinated biphenyls or PCBs from several rivers in the United States. The latest was a successful cleanup of the Kalamazoo River in Michigan. The dredging of the river began in June 2007 and is expected to be finished in December 2008. The goal is to create a cleaner PCB-free ecosystem.

     

    Biochemistry is used in Environmental Science to identify biological markers (biomarkers) in genes, blood or urine that can be used to determine exposure, toxic effect, and susceptibility to certain classes of xenobiotics. Biomarkers were used November 2008 to help British Columbia fisheries in managing salmons spawning grounds. The project titled “Genomic Tools for Fisheries Management” combines genetic information with environmental data. The researchers use genetic biomarkers to asses the health of the salmon to see the effects of pollution on the salmon's health and spawning habits.

     

    Biomagnification and bioaccumulation are important processes of xenobiotics that occur in living systems. In the April 2008 issue of the journal Science, there is an article on a study showing the bioaccumulation of mercury through the terrestrial food chain of birds. Mercury is a notoriously toxic pollutant. Other important biochemical processes that are affected through environmental exposure to toxins are cell damage and cell death. The cell damage mechanism is due to xenobiotics which are sometimes carcinogenic.

 

 

 

Conversational Group PQI 

Regards, here you can found the topics about we will talk in the next meeting. Thank everybody and see you..