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Amino Acid Metabolism
Amino Acid Metabolism

... • Metabolic pool AA has no storage form in mammals (as with other life forms) as free AA or as specialized storage form (such as glycogen for glucose, TG for FA) but a certain percentage of muscle & structural proteins are “expendable”. • AA are used for proteins, N compounds, energy (also via gluco ...
1 Amino Acid Metabolism
1 Amino Acid Metabolism

... • Metabolic pool AA has no storage form in mammals (as with other life forms) as free AA or as specialized storage form (such as glycogen for glucose, TG for FA) but a certain percentage of muscle & structural proteins are “expendable”. • AA are used for proteins, N compounds, energy (also via gluco ...
Tricarboxylic Acid Cycle
Tricarboxylic Acid Cycle

... • Therefore, the two NADH molecules produce six ATP molecules total. So, the total number of ATP molecules formed from glycolysis is eight. When each molecule of pyruvic acid is oxidized, one molecule of NADH is produced. This occurs twice, since one glucose molecule splits into two molecules of py ...
Lecture 5: The Chemistry of Life III
Lecture 5: The Chemistry of Life III

... • Scientists use X-ray crystallography to determine a protein’s structure • Another method is nuclear magnetic resonance (NMR) spectroscopy, which does not require protein crystallization ...
Amino Acids - Newcastle University
Amino Acids - Newcastle University

... Amino acids are often referred to as ‘the building blocks of life’. This is because they combine in different sequences to form proteins, which are fundamental to all living organisms. There are 21 amino acids, 9 of which are called ‘essential’ because they cannot be naturally found in the body. Thi ...
Lesson Objective: Vocabulary: Lesson Question: Focus Question
Lesson Objective: Vocabulary: Lesson Question: Focus Question

... ronment, pyruvic acid is broken down and NADH is used to make a large amount of ATP through the process known as aerobic respiration Pyruvic acid can enter other pathways if there is not oxygen present in the cell’s environment. The combination of glycol glycolysis ysis and these anaerobic pathways ...
Citric Acid cycle or Tricarboxylic Acid cycle or Krebs Cycle
Citric Acid cycle or Tricarboxylic Acid cycle or Krebs Cycle

Honors Biology Unit 1 Objectives: The Chemistry of Life
Honors Biology Unit 1 Objectives: The Chemistry of Life

... of matter, activation energy, ion, ionic bond, covalent bond, hydrogen bond, pH, acid, base, organic, macromolecule, monomer, polymer, carbohydrate, monosaccharide, disaccharide, polysaccharide, starch, cellulose, lipid, fatty acid, glycerol, saturated f. a., unsaturated f. a., triglyceride, protein ...
Problem Set# 3
Problem Set# 3

... 3. Which is true of the intermediate step of metabolism? a. CO2 and ATP are released during the process b. A multienzyme complex removes a carboxyl group, transfers electrons to NAD+, and attaches a coenzyme. c. NAD+ is rejuvenated so glycolysis can continue d. Lactate is produced to rejuvenate free ...
What is Ketosis
What is Ketosis

... Insufficient insulin production (Type I) Ineffective or impaired insulin function (Type II) ...
Chapter 8 Worksheet
Chapter 8 Worksheet

... sequence  of  4(electron,  proton)  carriers  build  into  the  5(outer,  inner)  membrane  of  the  mitochondrion.   Molecules  of  FADH2  and  6(ADP,  NADH)  bring  high-­‐energy  electrons  to  the  chain  from  glycolysis  and  7(the   ...
Lecture 03 Ch2and3
Lecture 03 Ch2and3

... as glycogen as cellulose ...
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... • During cellular respiration, most energy flows in this sequence: glucose  NADH  electron transport chain  proton-motive force  ATP • About 34% of the energy in a glucose molecule is transferred to ATP during cellular respiration, making about 36 ATP. • What happens to the rest of the energy? ...
cellular respiration - wlhs.wlwv.k12.or.us
cellular respiration - wlhs.wlwv.k12.or.us

MACROMOLECULES - Savitha Sastry
MACROMOLECULES - Savitha Sastry

... is formed between MONOMERS = Polymers are made!  Needs ATP and Enzymes  Anabolic/biosynthesis reactions use this to make macromolecules for growth/replacement ...


... metabolic pathway, making them more reactive Often this stage has to occur for the next reaction to take place. The reactant is now phosphorylated and energised which allows the pathway to proceed. ...
SI Worksheet #10 (Chapter 9) BY 123 Meeting 10/8/2015 Chapter 9
SI Worksheet #10 (Chapter 9) BY 123 Meeting 10/8/2015 Chapter 9

... 25. What is chemiosmosis? The movement of ions across a selectively permeable membrane, down their electrochemical gradient; relates to the generation of ATP by the movement of hydrogen ions across a membrane during cellular respiration. 26. What is the structure of ATP synthase? Part of ATP Synthas ...
Chapter 7
Chapter 7

... • If oxygen is available, the pyruvic acid will move into the mitochondria and aerobic respiration will begin. • 4 ATP molecules are produced. Two are used to break apart the next glucose molecule and keep glycolysis going. • This leaves a net yield of 2 ATP molecules for use by the cell. • Two NAD+ ...
Biology 2 –Quiz 7 Cellular Respiration Name: Date: For the
Biology 2 –Quiz 7 Cellular Respiration Name: Date: For the

... 8. When glucose is oxidized to CO2 and water, approximately 40% of its energy is transferred to a. Heat b. ATP c. Water d. Acetyl Co A 9. What do muscle cells in oxygen deprivation produce? a. ATP, alcohol, and recycled NAD+ b. CO2 and Lactic Acid c. ATP, Lactic Acid, and recycled NAD+ d. ATP, lacti ...
Bio1A Unit 1-2 Biological Molecules Notes File
Bio1A Unit 1-2 Biological Molecules Notes File

... •Most are globular proteins that act as biological catalysts •Holoenzymes (complete) consist of an apoenzyme (protein) and a cofactor (usually an ion; ieFe2+, Cu2+) •Enzymes are chemically specific •Frequently named for the type of reaction they catalyze •Enzyme names often end in -ase •Lowers activ ...
pptx: energysys4exsci
pptx: energysys4exsci

... Energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes. Cells require chemical energy for three general types of tasks: to drive metabolic reactions that would not o ...
PowerPoint 演示文稿
PowerPoint 演示文稿

... • Acetyl-CoA+3NAD+ +FAD+GDP+Pi+2H2O→2CO2+3NADH+FADH2+G TP+2H++CoA • One Acetyl-CoA through the cycle produces two CO2, one ATP, four reduced coenzymes • Two H2Os are used as substrates • Absolutely depends on O2 ...
Chapter 9: Cellular Respiration
Chapter 9: Cellular Respiration

... – Only a small amount of carbohydrates can be stored in the body. – Glycogen is a polysaccharide that is created to store glucose ...
bio ch3 powerpoint outline
bio ch3 powerpoint outline

... A solution is a mixture in which ions or molecules of one or more substances are evenly distributed in another substance. Many substances are transported throughout living things as solutions of water. Dissolved substances can move more easily within and between cells. Some water molecules break apa ...
Organic Chemistry #2 Vocabulary Adhesion Cohesion Atom
Organic Chemistry #2 Vocabulary Adhesion Cohesion Atom

... maximized, the active sites of the enzymes are all used adding more substrate does not increase the rate of reaction. ...
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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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