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Chapter 5 Active Lecture Questions
Chapter 5 Active Lecture Questions

Quiz:1
Quiz:1

... 7. The non-polar amino acids such as iso-leucine, leucine, valine, alanine, phenyl alanine are soluble in water but when they are present in a peptide (joined together by amide bond), the peptide is insoluble in water. Why? 8. What will be the net charge on a poly-lysine peptide at neutral pH and at ...
Chapter 4 Study Guide
Chapter 4 Study Guide

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RNA world and protocells
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... –  In present-day cells, nucleic acids and proteins are responsible for replication and metabolic functions, respectively –  The formation of each one of these two types of macromolecules requires the previous existence of the other one The synthesis of nucleic acids is catalyzed by proteins (enzyme ...
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Note sheet Chap 5, Sect 3
Note sheet Chap 5, Sect 3

... Stage 1: Break down of glucose The primary fuel for cellular respiration is __glucose__, which comes from the breakdown of __carbohydrates__. Glucose is broken down in the __cytoplasm__ during a process called ___glycolysis___, which is an enzyme assisted __anaerobic_ process (means no oxygen needed ...
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Cell Respiration Outline | Date: Mitochondrion • Structure o Double

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Food Biotechnology Dr. Tarek Elbashiti

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OCR Moduel B4 - Dinnington High School
OCR Moduel B4 - Dinnington High School

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Interactive Video Lesson

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... a. Makes ATP for cell use; uses glucose and oxygen makes waste products of carbon dioxide and water; occurs in mitochondria; NADH is electron carrier used b. Glycolysis (1) occurs in cytoplasm; anaerobic (2) rearranges the bonds in glucose molecules, releasing free energy to form ATP from ADP throug ...
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Chapter 26
Chapter 26

... • Carbon atoms of the glucose have all been carried away as CO2 and exhaled. • Energy has been lost as heat, stored in 2 ATP, 8 reduced NADH, 2 FADH2 molecules of the matrix reactions and 2 NADH from glycolysis • Citric acid cycle is also a source of substances for the synthesis of fats & nonessenti ...
Chapter 10- Photosynthesis
Chapter 10- Photosynthesis

... F. A Closer Look at ATP Formation - Hydrogen ions from photolysis of water accumulate inside the thylakoid compartment of chloroplasts to set up concentration and electric gradients. - As the hydrogen ions flow out through channels into the stroma, enzyme action links phosphate to ADP to form ATP. 2 ...
Chapter 26
Chapter 26

... • Carbon atoms of the glucose have all been carried away as CO2 and exhaled. • Energy has been lost as heat, stored in 2 ATP, 8 reduced NADH, 2 FADH2 molecules of the matrix reactions and 2 NADH from glycolysis • Citric acid cycle is also a source of substances for the synthesis of fats & nonessenti ...
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... Carbon and Organic Chemistry • The unique properties of an organic compound depend not only on its carbon skeleton but also on the atoms attached to the skeleton – These atoms are called functional groups – Some common functional groups include: Hydroxyl group ...
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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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