Tuesday, February 26, 2013

You Are Your Microbes!



Relevance:

All through Unit 5, we have been learning about how microbes affect our world.  In many examples, we learned that prokaryotes such as Mycobacterium tuberculosis causes a very fatal disease called Tuberculosis.  According to the bio text book, this is the world's deadliest disease.  However, microbes can also help the environment.  In one way, certain bacteria can return carbon dioxide back into the atmosphere by decomposing organic materials.  Another way, microbes can be beneficial to humans is through, Bioremediation, which essentially uses the natural abilities of certain prokaryotes to clean up toxic spills and sewage seepage.  Lastly, trees rely heavily on Mycorrhizae, which is a fungi.  This fungi lives underneath the tree and are connected to the plants roots.  Basically, it absorbs nutrients and minerals and gives some of it to the tree and the tree provides food for the fungi.  This symbiotic relationship is the culmination of evolution and allows for the tree to grow faster in order to compete with the trees around it for sunlight.


Media-File:
In our class curriculum, all we discussed were how microbes can drastically harm humans.  However, there is another side to this story.  You see, in our bodies, there are many different types of microbes that run our bodies efficiently; and if some of these microbes disappeared, we would be in a crap load of trouble! Did you know that some people have one type of microbe that another person doesn't have? Well, according to this video, that is true! For example, in our stomach, microbes help digest our  food. Cellulytic bacteria's main job in our digestive system is to help break down cellulose in our food.  You get cellulose
by eating vegetables and fruits (cell walls are made of cellulose).  Next, respirators (another type of microbe) collect
the sugars that were broken down and burn them for fuel.  Then, sugar are sent to fermenters 
(another type of microbe) which extract energy from the sugar.  The video then brings up the interesting point that 
not everyone has the same set of microbes living in their stomach.  The type of microbes found in a persons stomach
varies by the persons genetic makeup and the types of microbes that we encounter in our lives.  One very important cause of 
variation of microbes comes from what type of food we eat.  For example, if a person eats complex sugars (apple) then 
he'll need many different types of microbes in order to break it down.  On the other hand, if someone consumes mostly
simple sugars (lollipop), then the microbes that are used to break down complex sugars aren't being used and soon 
leave the body entirely.  People who are stuck in this situation usually develop diseases such as diabetes and stomach
problems for the rest of their life.  Moral of the story: Eat a balanced meal which consists of healthy choices so that the
microbes in our stomach are in harmony.  That way, we can live the good life!
     .

Source:
URL: http://www.youtube.com/watch?v=1X8p0vhsWRE
Publisher: TED Education
Published Date: January 7th, 2013

  

Food Safety Music - Microbes Medley - Funny!!!!!!


By Will Mitchell

A two-song medley: "Microbes, They Might Kill You" and "We Are the Microbes" is a parody of Queen's "We Will Rock You" and "We Are the Champions," as performed by Carl Winter.



Summary

This funny video is all about the dangers of microbes that find a way into your food. It explains through song lyrics why many microbes prove harmful to humans who ingest or inhale them. The little green shaped organisms in the video are cartoonish looking microbes. You learn that some microbes may harm you if you don't heat up an item of food like a hamburger well enough. In other types of food, you must always remember to use cautionary measures when eating food, especially if microbes are commonly found in that type of food.


Relevance

We are reminded that allowing spores from microbes to cross-contaminate will just further spread the microbes around, and potentially harm more objects and organisms they touch. You obviously will help reduce the spread of harmful microbes by washing your hands. The microbes that reside in hamburger meat survive in normal temperatures, and need to be heated up a good amount in order to be killed and prevent harm to yourself when eating foods that have those kinds of microbes. We are reminded as well that microbes are often bombarded with all sorts of disinfectants and other items meant to kill the microbes. Examples include chlorine, pH, gamma rays, etc. But, luckily for microbes, they are naturally occurring, and are not wiped out as easily as it might seem. When microbes are threatened, they can turn into virulent strains, and will keep dividing as many times as they can. They are present in the food we eat, they can harm our kidneys, and cause GI damage. Well-known types of microbes include E. coli, clostridium, and salmonella. They can be found in lettuce, sprouts, salami, stew, chicken, soft cheeses, fruit juices, and hamburgers.


Information
URL: http://www.youtube.com/watch?v=1EkehFkhWf4
Date Published: October 16, 2012
Posted by: Carl Winter