Why are Proteins Important in Organisms
... and hydrogen; they differ only in the R group. Twenty-two different amino acids are found in proteins; each has its own characteristic R group. Amino acids are combined by the reaction called: As you read before, monomers are joined by synthesis. ...
... and hydrogen; they differ only in the R group. Twenty-two different amino acids are found in proteins; each has its own characteristic R group. Amino acids are combined by the reaction called: As you read before, monomers are joined by synthesis. ...
Slide 1
... Enzymes are catalysts Proteins that are not changed or used up in the reaction – specific — will only work on limited types of substrates – limited — by their saturation – regulated — by other cellular chemicals ...
... Enzymes are catalysts Proteins that are not changed or used up in the reaction – specific — will only work on limited types of substrates – limited — by their saturation – regulated — by other cellular chemicals ...
Macromolecule Expert Sheets
... 3. Draw and label the levels of organization of the protein structure. 4. What types of atoms are found in proteins? 5. Draw the general structure for an amino acid and label its functional groups. 6. Which part of an amino acid determines its specific properties? 7. When 2 amino acids are joined to ...
... 3. Draw and label the levels of organization of the protein structure. 4. What types of atoms are found in proteins? 5. Draw the general structure for an amino acid and label its functional groups. 6. Which part of an amino acid determines its specific properties? 7. When 2 amino acids are joined to ...
Multiple Choice
... Lysozyme has a pH centered around pH 5.0. The active site of lysozyme contains a glutamic acid residue (pKa = 5.5) and an aspartic acid residue (pKa = 4.0). Which of the following statements is correct about the mechanism of lysozyme? a. The glutamic acid residue is in a more polar environment than ...
... Lysozyme has a pH centered around pH 5.0. The active site of lysozyme contains a glutamic acid residue (pKa = 5.5) and an aspartic acid residue (pKa = 4.0). Which of the following statements is correct about the mechanism of lysozyme? a. The glutamic acid residue is in a more polar environment than ...
Protein - Peoria Public Schools
... means that like a lock and key, only certain enzymes will fit certain interactions. The shape of the enzyme determines which substance it will affect. Notice that the enzyme for one reaction would not work for the enzyme of another reaction because the shapes would not match up. ...
... means that like a lock and key, only certain enzymes will fit certain interactions. The shape of the enzyme determines which substance it will affect. Notice that the enzyme for one reaction would not work for the enzyme of another reaction because the shapes would not match up. ...
Mechanisms of Enzymes
... lewis acid and accept electrons. Therefore they are effective electrophiles. Another important reason for involving metals is the positive charge at any physiological pH. ...
... lewis acid and accept electrons. Therefore they are effective electrophiles. Another important reason for involving metals is the positive charge at any physiological pH. ...
Biochemistry Self-Test
... 3. In a condensation reaction, two molecules combine and a molecule of _________ is produced. 4. A substance that tends not to react with water, "Water hating" , is ________________________ 5. Breaking of _______________ bonds is the first thing that happens when water is heated, which means that it ...
... 3. In a condensation reaction, two molecules combine and a molecule of _________ is produced. 4. A substance that tends not to react with water, "Water hating" , is ________________________ 5. Breaking of _______________ bonds is the first thing that happens when water is heated, which means that it ...
103 Rev Ex2 key Win06
... 25. Is a coenzyme the same thing as a cofactor? Explain. A coenzyme is a type of cofactor. A cofactor is a small molecule or metal ion that is required for an enzyme to be active. A coenzyme is a small organic molecule cofactor, such as a vitamin. ...
... 25. Is a coenzyme the same thing as a cofactor? Explain. A coenzyme is a type of cofactor. A cofactor is a small molecule or metal ion that is required for an enzyme to be active. A coenzyme is a small organic molecule cofactor, such as a vitamin. ...
ReviewExamIII
... How does pH and temperature affect enzymatic rate (velocity)? How does a graph of enzymatic rate look versus pH and temperature? How do catabolic and anabolic reactions differ with respect to energy requirements or use, and which is a "build-up" and which a "break-down" group of reactions? What are ...
... How does pH and temperature affect enzymatic rate (velocity)? How does a graph of enzymatic rate look versus pH and temperature? How do catabolic and anabolic reactions differ with respect to energy requirements or use, and which is a "build-up" and which a "break-down" group of reactions? What are ...
MLAB 1315-Hematology Fall 2007 Keri Brophy
... Autosomal recessive anemia Red cells are unable to retain water which results in hemolysis, due to cell shrinkage, distortion of shape and increased membrane rigidity Pyruvate kinase is an essential enzyme in the Glycolytic/Embden-Meyerhof pathway ...
... Autosomal recessive anemia Red cells are unable to retain water which results in hemolysis, due to cell shrinkage, distortion of shape and increased membrane rigidity Pyruvate kinase is an essential enzyme in the Glycolytic/Embden-Meyerhof pathway ...
Biochemical Processes Check 3 (Solutions)
... 1. Define the term enzyme. An enzyme is an organic catalyst. They are proteins that alter the rate of reactions – usually to speed them up to a biologically useful rate. Many reactions occur naturally but at extremely slow rates. Enzymes only alter the rate (amount produced in a given time) of a rea ...
... 1. Define the term enzyme. An enzyme is an organic catalyst. They are proteins that alter the rate of reactions – usually to speed them up to a biologically useful rate. Many reactions occur naturally but at extremely slow rates. Enzymes only alter the rate (amount produced in a given time) of a rea ...
Bacterial Metabolism
... – Many protein enzymes are complete without additions – Apoenzymes are inactive if not bound to non-protein cofactors (inorganic ions or coenzymes) – Binding of apoenzyme and its cofactor(s) yields holoenzyme – Some are RNA molecules called ribozymes ...
... – Many protein enzymes are complete without additions – Apoenzymes are inactive if not bound to non-protein cofactors (inorganic ions or coenzymes) – Binding of apoenzyme and its cofactor(s) yields holoenzyme – Some are RNA molecules called ribozymes ...
Enzyme Notes
... Many of these reactions would not occur quickly enough to sustain life without the help of enzymes. Enzymes An enzyme is a molecule that increases the __________of biochemical reactions. Enzymes hold molecules close together and in the correct orientation. An enzyme _____________ the activation ene ...
... Many of these reactions would not occur quickly enough to sustain life without the help of enzymes. Enzymes An enzyme is a molecule that increases the __________of biochemical reactions. Enzymes hold molecules close together and in the correct orientation. An enzyme _____________ the activation ene ...
eprint_1_29837_493
... conditions of pH and temperature, time required for enzyme reaction is less. Enzyme Inhibition Enzyme are proteins and they can be inactivated by the agents that denature them. The chemical substances which inactivate the enzymes are called as inhibitors and the process is called enzyme inhibition. ...
... conditions of pH and temperature, time required for enzyme reaction is less. Enzyme Inhibition Enzyme are proteins and they can be inactivated by the agents that denature them. The chemical substances which inactivate the enzymes are called as inhibitors and the process is called enzyme inhibition. ...
Enzymes
... • Catalysts speed up chemical reactions without being changed themselves • Living organisms make biological catalysts called enzymes • Enzymes are globular proteins which act as catalysts of chemical reactions • Without enzymes to catalyze them, many chemical processes happen at a very slow rate in ...
... • Catalysts speed up chemical reactions without being changed themselves • Living organisms make biological catalysts called enzymes • Enzymes are globular proteins which act as catalysts of chemical reactions • Without enzymes to catalyze them, many chemical processes happen at a very slow rate in ...
103 topic summary
... Structures of alpha-helices, beta-pleated sheets and triple helices Cross-linking in proteins: hydrophobic interactions, hydrophilic interactions, salt bridges, hydrogen bonding and disulfide bonds Globular vs. fibrous proteins Protein hydrolysis (enzymes and resistance to acid hydrolysis) Denaturat ...
... Structures of alpha-helices, beta-pleated sheets and triple helices Cross-linking in proteins: hydrophobic interactions, hydrophilic interactions, salt bridges, hydrogen bonding and disulfide bonds Globular vs. fibrous proteins Protein hydrolysis (enzymes and resistance to acid hydrolysis) Denaturat ...
Document
... All the chemical reactions in cytoplasm take place in solution, i.e. in water Water itself takes part in many of these chemical reactions Salts of sodium, potassium and calcium and many others play an important part in these reactions ...
... All the chemical reactions in cytoplasm take place in solution, i.e. in water Water itself takes part in many of these chemical reactions Salts of sodium, potassium and calcium and many others play an important part in these reactions ...
The Chemicals of Living Things
... All the chemical reactions in cytoplasm take place in solution, i.e. in water Water itself takes part in many of these chemical reactions Salts of sodium, potassium and calcium and many others play an important part in these reactions ...
... All the chemical reactions in cytoplasm take place in solution, i.e. in water Water itself takes part in many of these chemical reactions Salts of sodium, potassium and calcium and many others play an important part in these reactions ...
Biochemistry
... Lipids do not dissolve in water but do dissolve in oils Candy, red meats, fried foods, dairy products ...
... Lipids do not dissolve in water but do dissolve in oils Candy, red meats, fried foods, dairy products ...
Metabolism & Enzymes
... active site is no longer functional binding site keeps enzyme inactive ...
... active site is no longer functional binding site keeps enzyme inactive ...
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.