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NoB1ch03QUICKcheck-ed
NoB1ch03QUICKcheck-ed

... What feature of enzymes controls which substrate they act on? The feature of an enzyme that controls which substrate it can act on is the shape of the active site of the enzyme molecule. Only compounds that include a region with a shape complementary to the shape of the active site can be substrates ...
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B6- under the microscope
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... Rapid growth of algae Plants in the dark die Rapid growth of bacteria Uses up all oxygen Fish die This is an accumulitive long term effect. Other similar chemical include pesticides (DDT on whales) due to bioaccumilation ...
Griffith_155
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... Bacteria ofthe genus Bacillus secrete a variety ofhydrolytic enzymes including proteases, amylases, glucanases, and lipases, depending on the specific strain.' Bacillus cereus secretes three phospholipases, one specific for PI(the PI-PLC), a second hydrolyzing sphingomyelin, and a third with a prefe ...
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The Chemical Basis of Life Atoms, Molecules, Ions, and Bonds

... • Ionic bonds form between two atoms when one or more electrons are transferred from one atom to the other. This bond occurs when the electronegativities of the atoms are very different and one atom has a much stronger pull on the electrons (high electronegativity) than the other atom in the bond. • ...
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Prentice hall Biology Worksheets

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Lehninger Principles of Biochemistry

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... Most people think of milk as a liquid. Yes, it is a liquid, but milk is really a mixture of fat and protein molecules in a watery solution. As we discussed in class, proteins are large organic molecules that are built as a chain (or polymer) of amino acids. The behavior and function of the protein i ...
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... Most people think of milk as a liquid. Yes, it is a liquid, but milk is really a mixture of fat and protein molecules in a watery solution. As we discussed in class, proteins are large organic molecules that are built as a chain (or polymer) of amino acids. The behavior and function of the protein i ...
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... DNA is sometimes called "the blueprint of life" because it contains the code, or instructions for building and organism and ensuring that organism functions correctly. Just like a builder uses a blueprint to build a house, DNA is used as the blueprint, or plans, for the entire organism. It is the c ...
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... There are four classes of macromolecules -carbohydrates, lipids, proteins, and nucleic acids (DNA & RNA). Carbohydrates and lipids are made of only carbon, hydrogen, and oxygen (CHO). Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon ...
2012/2013 AP Biology Midterm Review Sheet
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... What macromolecule are enzymes made of? What do they do to a substrate? Can they be reused? What do enzymes do to the activation energy of a reaction? ...
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(β/α)8-barrel enzymes present in completely sequenced genomes

... corresponding amino acid sequences were collected and aligned, and the three respective evolutionary trees were constructed and discussed. The results obtained indicate that: (i) the glycolytic pathway may be in some organisms incomplete or some other, alternative and/or unique enzymes (reaction ste ...
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ch3b FA11 - Cal State LA

... Oxidation and reduction • Redox reactions: the gain (reduction) or loss (oxidation) of electrons – Changes in organic molecules shift the degree of e- sharing • Carbon in C-H bond is reduced • Carbon in C=O bond is oxidized – EN diffs result in e- spending less time around C when bonded to O ...
Modern Biology: Chapter 3
Modern Biology: Chapter 3

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aminoacids 2

... in which there is a partial or complete deficiency in branched-chain α-keto acid dehydrogenase, an enzyme complex that decarboxylates leucine, isoleucine, and valine Accumulation of these A.A. in the blood, causing a toxic effect that interferes with brain functions. Characteristics of Maple syrup u ...
University of Lincoln RIF Studentships 2014 PROJECT DETAILS
University of Lincoln RIF Studentships 2014 PROJECT DETAILS

... rationally designed transition state analogue inhibitors. The study will utilise a wide variety of molecular biology / biochemical techniques such as the generation of prokaryotic knockout mutants, the cloning and hyperexpression of autolysin genes, protein purification and X-ray crystallography for ...
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Enzyme



Enzymes /ˈɛnzaɪmz/ are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called enzymology.Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity comes from their unique three-dimensional structures.Like all catalysts, enzymes increase the rate of a reaction by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster. An extreme example is orotidine 5'-phosphate decarboxylase, which allows a reaction that would otherwise take millions of years to occur in milliseconds. Chemically, enzymes are like any catalyst and are not consumed in chemical reactions, nor do they alter the equilibrium of a reaction. Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH.Some enzymes are used commercially, for example, in the synthesis of antibiotics. Some household products use enzymes to speed up chemical reactions: enzymes in biological washing powders break down protein, starch or fat stains on clothes, and enzymes in meat tenderizer break down proteins into smaller molecules, making the meat easier to chew.
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