ethylene production through changes in ACS gene expression levels and the stability/activity of the enzyme. ACS proteins can be divided into 3 groups (type-1‚ 2 & 3) based on their C-terminal domain and the presence of phosphorylation sites. Type-1 and -2 ACS isoforms contain phosphorylation sites for kinases‚ but type-3 lacks of the phosphorylation sites.
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cells share; however‚ there are also important differences among various cell types (for example‚ animal cells vs. bacterial cells) • [Figure 3-23] The inside of a cell is loaded (crowded‚ packed) with molecules including RNA‚ ribosomes and proteins. o A cell is already packed‚ even with these few components; without even considering other organelles and components present in cells‚ the cell is already crowded; crowding changes the behavior of cellular components • Many different
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Structure and Characteristics of Lipids‚ Proteins‚ and Carbohydrates Carbs Monosaccharide- simple sugars; simple carbs C6H12O6 3 types Glucose Energy source for all cells 1 of the 2 sugars in every disaccharide Makes up polysaccharides Mild‚ sweet flavor 6-sided ring Fructose Intensely sweet; naturally found in fruits‚ honey 5-sided ring Galactose No sweet flavor 6-sided ring Position of the hydroxyl group differs from glucose Disaccharides- pairs of monosacchs; simple carbs
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Chemotaxis‚ the guided movement of cells by chemical gradients created by chemoattractant proteins‚ such as chemokines and bacterial products produced at the site of inflammation‚ probably emerged early in eukaryotic evolution {Kay‚ 2008 #3289}. Neutrophils are highly mobile cells that readily undergo chemotaxis. Neutrophils can detect as low as 1/100th of a chemokine gradient. They polarize their migration towards bacterial peptides over a pool of other chemical gradients to reach sites of inflammation
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mercury. This means that copies of RNA will not be created and this will limit the amount of certain proteins and enzymes available during critical times in development and growth. http://www.youtube.com/watch?v=erOP76_qLWA&feature=related The dogma of molecular biology entails the transcription of genetic information from DNA onto RNA and the translation of these mRNA messages into proteins and enzymes. It is the function of RNA polymerase‚ to copy the genetic message to messenger RNA as
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catabolic reactions is used to drive the anabolic reactions. Anabolism is also enzyme regulated but requires energy for taking the simpler broken down components from the catabolism phase and building them into complex molecules such as starch‚ proteins and lipids What is the role of ATP? ATP is the driving force for catabolic and anabolic reactions. ATP stores energy that is produced from the catabolic reactions which is later released to drive the anabolic reaction and other cellular work.
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The degradation of cholesterol by Pseudomonas sp. NCIB 10590 under aerobic conditions. 1. R W Owen‚ 2. A N Mason and 3. R F Bilton ABSTRACT The metabolic pathway of cholesterol degradation by bacteria has not been completely established. Several possible intermediates have not been identified and many pathway delineations have not involved the use of the cholesterol molecule per se and just one bacterial species. The bacterial degradation of cholesterol by Pseudomonas sp. NCIB
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In a 1-2 page report‚ address the following. The first part of your report is the Results section of a scientific paper. In this section‚ present the results of your experiment without any interpretation. Be sure to adequately answer the following questions: How did the rate of the reaction change as you changed each of the three variables? If you vary the temperature‚ after a certain temperature‚ the enzymes will become denatured and then the rate will decrease. Each enzyme functions at
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20% casein (Casein is a protein found in dairy products) as to feeding the other ½ of rats with 5% casein. Within the 12 weeks if his research the rats that were being feed with the 20% of casein had shown a significant increase of being prone to early tumor growth‚ as compared to the rats that were only feed with 5% of casein. Therefore‚ Dr. Campbell concluded that‚ “Apparently‚ we can turn on and off our cancer growth.” Also‚ if we consume a good amount of animal protein we are being prone to having
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Oxygen in the body is depleted by aerobic organisms; creating an ideal environment for the new creation of anaerobic organisms. Anaerobic organisms from the gastrointestinal tract and respiratory system transform carbohydrates‚ lipids‚ and proteins yielding organic acids (propionic acid‚ lactic acid)‚ and gases‚ (methane‚ hydrogen sulphide‚ ammonia). The process of microbial proliferation within a body is referred to as putrefaction and leads to the second stage of decomposition. The second
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