Saturday, December 29, 2012

30,31,32...hypertonic, callulose, and gymnosperm cone



This tree is an example of cellulose(big idea 2#8). This structure is very important in the formation of plants and therefore andvanced life as we know it. it has the common C6H12O6 formula but forms long chains by dehydration synthisis, making it occour in nature as C6H10O5. It forms the cell walls of plants that allows them to be turgid and stand up without violently and tragicly exploding. Humans cannot digest cellulose, but some animals such as termites and ruminants(cows ect). Wood contains roughly 40-50% cellulose.
 This lovely grass is an example of hypertonic(big idea 2 # 21). This is when a select fluid has more molarity due to stuff inside than the surrounding body. Water flows from low water potential to high water potential and therefore into the body with a higher molarity; known as osmosis. This is one reason that water flows up plants to give them water in higher levels, along with cohesion.
This is a gymnosperm cone(big idea 1 #24). It is the reproductive vessle of a gymnosperm, known for having bare seeds or sometimes in the form of cones like this one. Most cones are cypres trees and are located above the equator. They are gametophytes and grow quickly, making them one of the first species in succession after a destructive event.

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