Monday, August 31, 2015

White Blood Cells

White blood cells, also known as leukocytes, help protect your body from diseases, illness, and infections. They constantly roam your body fighting viruses, bacteria, and anything else that can be dangerous to your health. Because most white blood cells have a life span of only one to three days, they are constantly being produced in your bone marrow. There are five types of white blood cells: monocytes, lymphocytes, neutrophils, basophils, and eosinophils. Monocytes help break down bacteria. Lymphocytes create antibodies to fight bacteria and viruses. Neutrophils kill and digest bacteria. Basophils create chemicals that help control your body's immune response. Lastly, eosinophils help with allergic responses, and kills cancer cells. Each type has a different function, but all do what it takes to keep your body healthy. White blood cells are classified as connective tisssues because they have a matrix. They have a nuclei, but does not have hemoglobin.
Work cited: "Healthcare-Online." Low White Blood Cell Count. N.p., n.d. Web. 31 Aug. 2015.
Work Cited: "Blood Cells." Blood Cells. N.p., n.d. Web. 31 Aug. 2015.

Saturday, August 29, 2015

Sweet Lab

During this lab, we tasted eight different carbohydrates and tested the sweetness of each of them. The eight carbohydrates that we tried were sucrose, glucose, fructose, galactose, maltose, lactose, starch, and cellulose.
We concluded that the polysaccharides were the ones that tasted the least sweet, while the disaccharides were the sweetest. According to NPR , we sense sweet when the object, such as sugar, reaches our taste buds, which contains over 100 cells. When the receptor protein and sugar reach each other, it simulates the sweet taste cell that sends signals to the brain and responds to the sweetness, which is the taste.
I thought that the starch, was very bland, which explains why many people don't like vegetables. Because starch is found in many cell walls in plants, it proves that many vegetables are not sweet and are generally bland. In my opinion, i thought the sweetest carbohydrate was fructose. I then realized that many fruits, foods, and drinks have fructose in them. Fructose is commonly added to foods and drinks for patability and taste enhancements, which explains why many people prefer fruits over vegetables.