Chapter 2 Study Guide
... 1. In modern blimps, the gas of choice is helium rather than hydrogen. Hydrogen would be lighter, but helium is much safer. What characteristics of the atomic structure of helium make is so much less reactive than hydrogen? ...
... 1. In modern blimps, the gas of choice is helium rather than hydrogen. Hydrogen would be lighter, but helium is much safer. What characteristics of the atomic structure of helium make is so much less reactive than hydrogen? ...
TDH - an Enzyme Involved in Metabolising Threonine to Glycine
... The data were processed using programs in the CCP4 suite, however the predicted spacegroup was ambiguous and took time to determine correctly. P4 was found to generate the best predictions in MOSFLM and the data was subsequently processed and scaled, giving an Rmerge of 0.154. It was later processed ...
... The data were processed using programs in the CCP4 suite, however the predicted spacegroup was ambiguous and took time to determine correctly. P4 was found to generate the best predictions in MOSFLM and the data was subsequently processed and scaled, giving an Rmerge of 0.154. It was later processed ...
Biochemistry Practice Questions
... D. The enzyme's activity continually increases as pH increases from 5.0 to 9.0. ...
... D. The enzyme's activity continually increases as pH increases from 5.0 to 9.0. ...
Serine Protease Mechanism
... (left) HIV-1 protease complexed with the inhibitor Crixivan (red) made by Merck. The flaps (residues 46-55 from each subunit) covering the active site are shown in green and the active site aspartate residues involved in catalysis are shown in white. (right) The close-up of the active site shows the ...
... (left) HIV-1 protease complexed with the inhibitor Crixivan (red) made by Merck. The flaps (residues 46-55 from each subunit) covering the active site are shown in green and the active site aspartate residues involved in catalysis are shown in white. (right) The close-up of the active site shows the ...
Chapter 5 - Enzymes
... Enzymes are protein catalysts that increase the velocity of a chemical reaction, and are not consumed during the reaction they catalyze. [Note: Some types of RNA can act like enzymes, usually catalyzing the cleavage and synthesis of phosphodiester bonds. RNAs with catalytic activity are called riboz ...
... Enzymes are protein catalysts that increase the velocity of a chemical reaction, and are not consumed during the reaction they catalyze. [Note: Some types of RNA can act like enzymes, usually catalyzing the cleavage and synthesis of phosphodiester bonds. RNAs with catalytic activity are called riboz ...
Chapter 5 Bacterial Metabolism
... • The electrons from the first cytochrome are transported to another cytochrome and then to the next down the chain • This is why the process is referred to as the electron transport chain because it helps transfer electrons down a chain of cytochromes to be finally transferred to an oxygen molecule ...
... • The electrons from the first cytochrome are transported to another cytochrome and then to the next down the chain • This is why the process is referred to as the electron transport chain because it helps transfer electrons down a chain of cytochromes to be finally transferred to an oxygen molecule ...
Introduction to metabolism. Specific and general pathways of
... smaller molecules and energy Anabolic reactions - synthesize molecules for cell maintenance, growth and reproduction Catabolism is characterized by oxidation reactions and by release of free energy which is transformed to ATP. Anabolism is characterized by reduction reactions and by utilization of e ...
... smaller molecules and energy Anabolic reactions - synthesize molecules for cell maintenance, growth and reproduction Catabolism is characterized by oxidation reactions and by release of free energy which is transformed to ATP. Anabolism is characterized by reduction reactions and by utilization of e ...
syllabus - option b(human biochemistry)
... The aim of this option is to give students an understanding of the chemistry of important molecules foundin the human body, and the need for a balanced and healthy diet. Although the role that these molecules play in the body should be appreciated, the emphasis is placed on their chemistry, and stud ...
... The aim of this option is to give students an understanding of the chemistry of important molecules foundin the human body, and the need for a balanced and healthy diet. Although the role that these molecules play in the body should be appreciated, the emphasis is placed on their chemistry, and stud ...
Biochemistry (Macromolecules)
... Proteins (A. K.A. Polypeptides) and Enzymes (Enzymes are a TYPE of protein.) A. These macromolecules make up greater than 50% of an organisms dry weight, called biomass. B. Names usually end with the suffix “lin” (i.e. insulin) for proteins and “ase” for enzymes (i.e. sucrase) C. The monomer “buildi ...
... Proteins (A. K.A. Polypeptides) and Enzymes (Enzymes are a TYPE of protein.) A. These macromolecules make up greater than 50% of an organisms dry weight, called biomass. B. Names usually end with the suffix “lin” (i.e. insulin) for proteins and “ase” for enzymes (i.e. sucrase) C. The monomer “buildi ...
Carbohydrates
... – each enzyme can only act upon one substrate • Enzymes are unchanged by reactions that they catalyze and are able to repeat the process many times over • Enzymes increase the rate of a chemical reaction by lowering the activation energy of the reaction • Enzymes are frequently named for the type of ...
... – each enzyme can only act upon one substrate • Enzymes are unchanged by reactions that they catalyze and are able to repeat the process many times over • Enzymes increase the rate of a chemical reaction by lowering the activation energy of the reaction • Enzymes are frequently named for the type of ...
biomolecules
... The other type of macromolecule that one would find in the acid insoluble fraction of any living tissue is the nucleic acid. These are polynucleotides. Together with polysaccharides and polypeptides these comprise the true macromolecular fraction of any living tissue or cell. For nucleic acids, the ...
... The other type of macromolecule that one would find in the acid insoluble fraction of any living tissue is the nucleic acid. These are polynucleotides. Together with polysaccharides and polypeptides these comprise the true macromolecular fraction of any living tissue or cell. For nucleic acids, the ...
Fig. 5-1
... Metabolism is the sum of all chemical processes carried out by living organisms. Anabolism = reactions that require energy to synthesize complex molecules from simpler ones. Needed for growth, reproduction and repair. Catabolism = reactions that release energy by breaking complex molecules into simp ...
... Metabolism is the sum of all chemical processes carried out by living organisms. Anabolism = reactions that require energy to synthesize complex molecules from simpler ones. Needed for growth, reproduction and repair. Catabolism = reactions that release energy by breaking complex molecules into simp ...
Catalase FAQ What is Catalase? Where is it found and what does it
... Temperature: In general, chemical reactions speed up as the temperature is raised. When the temperature increases, more of the reacting molecules have the kinetic energy required to undergo the reaction. Enzyme catalyzed reactions also tend to go faster with increasing temperature until a temperatur ...
... Temperature: In general, chemical reactions speed up as the temperature is raised. When the temperature increases, more of the reacting molecules have the kinetic energy required to undergo the reaction. Enzyme catalyzed reactions also tend to go faster with increasing temperature until a temperatur ...
C483 Study Guide for Exam 1 Summer 2016 Basic Information
... Degradation, partial digestion, myoglobin/hemoglobin structure-function, oxygen binding curve, hyperbolic vs sigmoidal curves, cooperativity, T vs R conformation, 2,3-BPG, Bohr effect, examples of fibrous structural proteins, microfilaments and microtubules, motor protein mechanisms, enzyme rate enh ...
... Degradation, partial digestion, myoglobin/hemoglobin structure-function, oxygen binding curve, hyperbolic vs sigmoidal curves, cooperativity, T vs R conformation, 2,3-BPG, Bohr effect, examples of fibrous structural proteins, microfilaments and microtubules, motor protein mechanisms, enzyme rate enh ...
ap nucleic acids, proteins and enzymes
... favored by the arrangement of polar bonds in the bases. There are so many hydrogen bonds in DNA and RNA that they form a fairly strong attraction, but not as strong as covalent bonds. Thus, base pairs can be separated with only a small amount of energy. ...
... favored by the arrangement of polar bonds in the bases. There are so many hydrogen bonds in DNA and RNA that they form a fairly strong attraction, but not as strong as covalent bonds. Thus, base pairs can be separated with only a small amount of energy. ...
PoL2e Ch03 Lecture-Nucleic Acids, Proteins, and Enzymes
... favored by the arrangement of polar bonds in the bases. There are so many hydrogen bonds in DNA and RNA that they form a fairly strong attraction, but not as strong as covalent bonds. Thus, base pairs can be separated with only a small amount of energy. ...
... favored by the arrangement of polar bonds in the bases. There are so many hydrogen bonds in DNA and RNA that they form a fairly strong attraction, but not as strong as covalent bonds. Thus, base pairs can be separated with only a small amount of energy. ...
Enzymes of Clinical Significance
... c. No hemolysis: LD-1 activity in the RBC is 150x greater than that in plasma d. Avoid lipemia, especially for spectrophotometric analysis e. Relatively unstable: analyze within 4 hours of collection, else stable at 2-6oC for up to one week; stability increases when stored ...
... c. No hemolysis: LD-1 activity in the RBC is 150x greater than that in plasma d. Avoid lipemia, especially for spectrophotometric analysis e. Relatively unstable: analyze within 4 hours of collection, else stable at 2-6oC for up to one week; stability increases when stored ...
AIM: What are Macromolecules?
... • Large group of molecules which belongs to the protein group • Major function is to increase the rate of chemical reactions. • Called Catalysts (speed up reactions) • Hold molecules close together and in correct orientation speeding up a chemical reaction and lowering the amount of energy needed fo ...
... • Large group of molecules which belongs to the protein group • Major function is to increase the rate of chemical reactions. • Called Catalysts (speed up reactions) • Hold molecules close together and in correct orientation speeding up a chemical reaction and lowering the amount of energy needed fo ...
Basic Principle in Plant Physiology
... • Cytoplasm is a colloid, made up largely of protein molecules dispersed in water. • It is hydrophillic, i.e. attracts water molecules around them and prevent them to aggregate into large particles and settle out. • Imbibition is the process by which water is absorbed by hydrophilic colloids inside ...
... • Cytoplasm is a colloid, made up largely of protein molecules dispersed in water. • It is hydrophillic, i.e. attracts water molecules around them and prevent them to aggregate into large particles and settle out. • Imbibition is the process by which water is absorbed by hydrophilic colloids inside ...
Citric Acid cycle or Tricarboxylic Acid cycle or Krebs Cycle
... facilitates the binding of the next substrate, the acetyl Coenzyme A. There is a further conformational change which leads to formation of products. This mechanism of reaction is referred as induced fit model. ...
... facilitates the binding of the next substrate, the acetyl Coenzyme A. There is a further conformational change which leads to formation of products. This mechanism of reaction is referred as induced fit model. ...
slides
... The larger the equilibrium constant the tighter the binding between protein and ligand. ...
... The larger the equilibrium constant the tighter the binding between protein and ligand. ...
Improved recovery of enzyme activity after
... p&rible to substitute riboflavin directly for perrvlfote (II the catulyst because the resulting gels ore not firm enough to be usoblc. Two modifications hove proven satisfactory in the separation of Neurorporo proteins. Both give much greater recovery of e n z y m e a c t i v i t y . The first modif ...
... p&rible to substitute riboflavin directly for perrvlfote (II the catulyst because the resulting gels ore not firm enough to be usoblc. Two modifications hove proven satisfactory in the separation of Neurorporo proteins. Both give much greater recovery of e n z y m e a c t i v i t y . The first modif ...
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.