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2-3 Carbon Compounds
2-3 Carbon Compounds

... • Large molecules formed from monosaccharide’s • Ex: Glycogen “animal starch” store of excess sugar for muscle contraction • Ex: Starch (stores excess sugar) and Cellulose (for strength) ...
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PATHWAYS THAT HARVEST CHEMICAL ENERGY CHAPTER 9

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Section 3.3: Carbon Compounds Building Blocks of Cells • The parts

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LS ch 22 part 2 test - Saint Joseph High School

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EOC Review Part 2

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Chapter 8 Notes – Energy and Metabolism

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notes File - selu moodle

... 2)starch – energy storage in plants Glycogen and starch are easily degraded and can be used when necessary for energy. 3) chitin – structural storage in animals (ex. shrimp shells, cockroach crunch) 4) cellulose – structural storage in plants Chitin and cellulose are designed to be strong and unbrea ...
Chapter 8 - University of South Alabama
Chapter 8 - University of South Alabama

Fatty Acid Spiral
Fatty Acid Spiral

... Our diets must contain a reasonable ratio of the essential amino acids in order for our bodies to maintain health. – Meat, eggs, soy and milk contain the essential amino acids in a similar ratio to that needed by humans. – Fruits, vegetables, nuts, seeds, and grains tend to be high in some and low i ...
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COVALENT BOND - hovanscience
COVALENT BOND - hovanscience

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Metabolism



Metabolism (from Greek: μεταβολή metabolē, ""change"") is the set of life-sustaining chemical transformations within the cells of living organisms. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments. The word metabolism can also refer to all chemical reactions that occur in living organisms, including digestion and the transport of substances into and between different cells, in which case the set of reactions within the cells is called intermediary metabolism or intermediate metabolism.Metabolism is usually divided into two categories: catabolism, the breaking down of organic matter by way of cellular respiration, and anabolism, the building up of components of cells such as proteins and nucleic acids. Usually, breaking down releases energy and building up consumes energy.The chemical reactions of metabolism are organized into metabolic pathways, in which one chemical is transformed through a series of steps into another chemical, by a sequence of enzymes. Enzymes are crucial to metabolism because they allow organisms to drive desirable reactions that require energy that will not occur by themselves, by coupling them to spontaneous reactions that release energy. Enzymes act as catalysts that allow the reactions to proceed more rapidly. Enzymes also allow the regulation of metabolic pathways in response to changes in the cell's environment or to signals from other cells.The metabolic system of a particular organism determines which substances it will find nutritious and which poisonous. For example, some prokaryotes use hydrogen sulfide as a nutrient, yet this gas is poisonous to animals. The speed of metabolism, the metabolic rate, influences how much food an organism will require, and also affects how it is able to obtain that food.A striking feature of metabolism is the similarity of the basic metabolic pathways and components between even vastly different species. For example, the set of carboxylic acids that are best known as the intermediates in the citric acid cycle are present in all known organisms, being found in species as diverse as the unicellular bacterium Escherichia coli and huge multicellular organisms like elephants. These striking similarities in metabolic pathways are likely due to their early appearance in evolutionary history, and their retention because of their efficacy.
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