Saturday, December 15, 2012
How Our Garden Grows
Over the past few weeks 4-2 collards have grown tremendously. From a tinny little seed they have blossomed into beautiful luscious leaves. They have transformed from a little seedling into a ready to harvest vegetable. However, we had a little help from sun to start of a cycle known non other then photosynthesis. Thanks to the sun trickling down its golden rays the light dependent reactions could occur. This when the energy is taken from the sun's rays and converted into oxygen, NADPH, and ATP. All this happens in the thylakode membrane. After all that the plant is not even close to being down. The calvin cycle still needs to occur. This is when six carbon molecules are combined with 5 carbon molecules to produce twelve 3 carbon molecule. Then, energy from ATP and energy from high energy electrons from NADPH are used to convert the tweleve 3-carbon molecules into high energy forms. Two of these 3-carbon molecules are used to make a 6-carbon sugar. The 10 remaining molecules are converted back into six 5-carbon molecules, which are used in the next cycle. Now the cells inside the plant need to go through a process called mitosis. Can be divided into 5 main stages. The first stage in prophase. this is when chromatin condenses into chromosomes and the centrioles separate. Next, metaphase has to occur. This is when all of the chromosomes line up across the cell. Now that the chromosomes are lined up anaphase can occur. This is when the sister chromatids separate into individual chromosomes and are moved apart. Now that the chromosomes have been moved apart they can now gather at each end of the cell, this process is called telophase. The last step has to occur so the daughter cell has an identical set of duplicate chromosomes. This is how how 4-2 collards have been able to grow from little seedlings into a beautiful leaves.
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