Week 5 the 4th reading journal

Beer Or Sugar Water? For Flies, The Choice Is Pale Ale

http://www.npr.org/2011/11/25/142708527/beer-or-water-for-flies-that-s-an-easy-choice

Summary

    Scientists in California analysed the flies' interests because they wondered why flies like beer. The content of the experiment was that they prepared sugar water and beer and they forced flies to choose one liquid. Generally, flies were told they like sugar. However, one of scientists, Anupama Dahanukar doubted this definition. She chose a pale ale beer in a grocery because basically it contains less sugar. She and other scientists were tried to identify any other chemicals which are liked by flies, not sugar. The result of the assay was that flies took a sip of pale ale. They probed that flies like a specific chemical, glycerol which tastes sweat but is not sugar. During the examination, scientists found a specific gene of flies. They created new flies which do not have the gene and tried the same assay-chose the two liquids. Those flies took a sip of sugar water.
    In the case of beer, glycerol is made by yeast during fermentation. Dahanukar is interested in any other flies genes which stimulates flies smell and taste senses now. Meanwhile, other scientists begin creating more powerful repellents with the test's result which have never been on the market.


My opinion
   This article was interesting. I understood the specific chemical which flies love. And I remembered the past experience after I read the article.When I worked at a small restaurant, I considered the small flies during summer time. Because they appeared mysteriously, and assembled around a beer server. I checked them by using an Internet website(wikipedia) and tried to exterminate them. The site said, "The flies like vinegar." After that, I created special liquid(including vinegar, water, and a little oil) to tempt the flies. The liquid worked very well(The process is that when flies assemble the liquid and sip it, they never fry out because of oil). I did not understand why flies like vinegar, but the article taught me the reason.


Vocabularies
1)grocery
:noun
:a (local) shop surrounding a small area
:shop, supermarket
:I always buy a box of cigarettes in the grocery near my house.

2)assay
:noun/verb
:examination/to examine
:trial, analysis/try, analyse
:I concluded the assay.

3)sip
:noun/verb
:a small amount/to drink something little by little
:drink, lick
:I took a sip of wine because this wine was very expensive.

4)repellent
:noun
:a stuff to repel animals or insects which are generally considered causing pest
:pesticide
:The repellent which I bought first time worked to mosquitoes very much.