Enjoy!
Glucose
Mitosis
Mutualism
Sunday, May 16, 2010
Sunday, May 9, 2010
DNA
A great video on the current topic we are discussing, DNA! (and the last minute is oddly, nonrealted, so never mind it!)
Wednesday, May 5, 2010
Allergies
Many of us experience the spring time sniffles. Some worse than others, some just plain bad. My Dad and I both have extremely bad allergies when it comes to pollen. In the spring when all the little flowers decide it's time to bloom, they release their pollen into the air, with the help of pollenators. Thanks. The little particles of pollen then brush off the feet and antena of these little insect helpers and blow through the air, sometimes landing in your vicinity or even brushing up against your nose. This is no bueno. The little pieces of pollen enter the nose and it's up to your body to decide how it reacts. Sometimes the body decides the pollen is an invader and attacks, causing an allergy to develop. For some people, their body just allows the pollen to pass, free from any of the side effects. Trust me, for living a life where 2 months a year you have a runny nose, itchy, watery eyes and you sneeze multiple times a day, you are so lucky if you do not have allergies! This video explains it a little more.
So whether you do or don't have allergies, you now know who to thank when you are sneezing like crazy, unless it was the cat!
So whether you do or don't have allergies, you now know who to thank when you are sneezing like crazy, unless it was the cat!
Sunday, May 2, 2010
Genetics
These past two weeks we've been studying all about DNA and Genes and inheritence and traits and so on and so forth and it is quite fascinating. We've all been practicing our punnett sqaures and loooking at all the possible combinations for offspring with two certain parents. It's been really cool to discover why my hair is curly or why Zach's eyes are blue or why Reid's hair is brown.
It's interesting to hear each of us try to stump Mr. Hillegass, but he knows it all and their is always an exception to the rule or we've missed a legitimate factor to the problem. Anyways, we are just learning that genes are portions of the double helix strand of DNA and each person has 2 sets of each gene, one from their mother, one from their father. When offspring are made, it means their are 4 different options for the genes for just one of the 23 genes each human has, because Mom has 2 options and Dad has 2, also. 23 chromosomes from Dad and 23 from Mom mean each cell has 46 chromosomes in it, how joyful! Anyways, simple being, their is a dominant gene and a recessive gene, sometime they are equally expressed, sometimes only half of each is expressed, sometimes only the dominant. This is why we don't all look the same. Exciting stuff, too much info to give to you all at one time, so we'll call this part one!
It's interesting to hear each of us try to stump Mr. Hillegass, but he knows it all and their is always an exception to the rule or we've missed a legitimate factor to the problem. Anyways, we are just learning that genes are portions of the double helix strand of DNA and each person has 2 sets of each gene, one from their mother, one from their father. When offspring are made, it means their are 4 different options for the genes for just one of the 23 genes each human has, because Mom has 2 options and Dad has 2, also. 23 chromosomes from Dad and 23 from Mom mean each cell has 46 chromosomes in it, how joyful! Anyways, simple being, their is a dominant gene and a recessive gene, sometime they are equally expressed, sometimes only half of each is expressed, sometimes only the dominant. This is why we don't all look the same. Exciting stuff, too much info to give to you all at one time, so we'll call this part one!
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