November 2003
... 27. The graph shows changes in the reaction rate of an enzyme-catalyzed reaction. What accounts for the shape of the graph between X and Y? A. B. C. D. ...
... 27. The graph shows changes in the reaction rate of an enzyme-catalyzed reaction. What accounts for the shape of the graph between X and Y? A. B. C. D. ...
Chapter 11 Radiation Damage to Biomolecules — From water
... The field of radiation biology was first promoted in the excellent book of Douglas Edward Lea from 1946 (Actions of Radiations on Living Cells). Because it is not possible to cover all the interesting areas of research, the goal here is to present selected topics that will provide a sense of the sc ...
... The field of radiation biology was first promoted in the excellent book of Douglas Edward Lea from 1946 (Actions of Radiations on Living Cells). Because it is not possible to cover all the interesting areas of research, the goal here is to present selected topics that will provide a sense of the sc ...
powerpoint
... 2. Transcription - DNA is "read" and RNA is made - an enzyme binds to DNA in a specific region - the DNA "unzips" - the enzyme links together RNA bases that are complementary to one of the DNA strands. - So, a DNA GENE was "read" and an m-RNA "copy" was made G TA C G G T C AT G AAA C T G ...
... 2. Transcription - DNA is "read" and RNA is made - an enzyme binds to DNA in a specific region - the DNA "unzips" - the enzyme links together RNA bases that are complementary to one of the DNA strands. - So, a DNA GENE was "read" and an m-RNA "copy" was made G TA C G G T C AT G AAA C T G ...
Carotenoids Biosynthesis – a review
... Carotenoids are naturally occurring pigments synthesized as hydrocarbons (carotenes) and their oxygenated derivatives (xanthophylls) by plants and microorganisms. They consist of eight isoprenoid units joined in such a manner that the arrangement of isoprenoid units is reversed at the center of the ...
... Carotenoids are naturally occurring pigments synthesized as hydrocarbons (carotenes) and their oxygenated derivatives (xanthophylls) by plants and microorganisms. They consist of eight isoprenoid units joined in such a manner that the arrangement of isoprenoid units is reversed at the center of the ...
1. overall goals a. general knowledge of microbiology b. in
... 3. lipids contain carbon, hydrogen, and oxygen a. a typical lipid has a backbone of glycerol linked to fatty acids (Figure 2.10) (1) glycerol part is usually hydrophilic (water-loving) (2) fatty acid region is hydrophobic (water-hating) b. important components of membranes (Figure 2.11) (1) form bil ...
... 3. lipids contain carbon, hydrogen, and oxygen a. a typical lipid has a backbone of glycerol linked to fatty acids (Figure 2.10) (1) glycerol part is usually hydrophilic (water-loving) (2) fatty acid region is hydrophobic (water-hating) b. important components of membranes (Figure 2.11) (1) form bil ...
Analysis of amino acids and peptide primary structure determination
... by A; K+ elutes last, and only after the pH of buffer is increased and K+ is deprotonated. • But there is a problem in detecting amino acids; they are colorless, and most of them have very little absorption in the UV region (they have no conjugation, except in the four aromatic amino acids) • To ove ...
... by A; K+ elutes last, and only after the pH of buffer is increased and K+ is deprotonated. • But there is a problem in detecting amino acids; they are colorless, and most of them have very little absorption in the UV region (they have no conjugation, except in the four aromatic amino acids) • To ove ...
RNA Helicase Module in an Acetyltransferase That Modifies a
... histone. Could an ancestral acetylase have acted on RNA in the primordial RNA World? If so, there should be traces reminiscent of such a molecule in either eukaryotes or archaea. Indeed, BLAST analysis with E. coli TmcA as a query identified homologous genes containing consecutive DUF699 and Acetylt ...
... histone. Could an ancestral acetylase have acted on RNA in the primordial RNA World? If so, there should be traces reminiscent of such a molecule in either eukaryotes or archaea. Indeed, BLAST analysis with E. coli TmcA as a query identified homologous genes containing consecutive DUF699 and Acetylt ...
Week 5: Macronutrient Jeopardy
... Q: What is a good source of fat? A: Avocados, cheese, dark chocolate, fish, nuts, coconut oil/extra virgin olive oil, or whole eggs. Q: What is the simplest form of a fat? A: Fatty acids -Q: How much of your daily intake should come from fats? A: 20-35% of one’s daily diet Q: What are the three kind ...
... Q: What is a good source of fat? A: Avocados, cheese, dark chocolate, fish, nuts, coconut oil/extra virgin olive oil, or whole eggs. Q: What is the simplest form of a fat? A: Fatty acids -Q: How much of your daily intake should come from fats? A: 20-35% of one’s daily diet Q: What are the three kind ...
BY 330 Spring 2015Worksheet 4 Name the substrate ligand and
... The law of mass action describes enzymes that can work in more than one direction. Whichever direction the equilibrium lies, is the direction that enzyme will work in. For example, if there is too much product present, these enzymes will work in reverse and if there is too much substrate present, th ...
... The law of mass action describes enzymes that can work in more than one direction. Whichever direction the equilibrium lies, is the direction that enzyme will work in. For example, if there is too much product present, these enzymes will work in reverse and if there is too much substrate present, th ...
Lecture 26
... FADH2, and 1 GTP. Citrate synthase: catalyzes the condensation of acetyl-CoA and oxaloacetate to yield citrate. Aconitase: isomerizes citrate to the easily oxidized isocitrate. Isocitrate dehydrogenase: oxidizes isocitrate to the -keto acid oxalosuccinate, coupled to NADH formation. Oxalosuccinate ...
... FADH2, and 1 GTP. Citrate synthase: catalyzes the condensation of acetyl-CoA and oxaloacetate to yield citrate. Aconitase: isomerizes citrate to the easily oxidized isocitrate. Isocitrate dehydrogenase: oxidizes isocitrate to the -keto acid oxalosuccinate, coupled to NADH formation. Oxalosuccinate ...
Problem Set 2 (multiple choice) Biochemistry 3300 1. What classes
... b) Alcohol dehydrogenase & pyruvate decarboxylase c) Fructose-1-phosphate alsolase & aldolase d) Hexokinase & sucrase e) Hexokinase & fructokinase 36. A metabolic pathway that is active catabolically as well as anabolically is called? a) bipolar b) amphother c) bipartite d) departed e) amphibolic 37 ...
... b) Alcohol dehydrogenase & pyruvate decarboxylase c) Fructose-1-phosphate alsolase & aldolase d) Hexokinase & sucrase e) Hexokinase & fructokinase 36. A metabolic pathway that is active catabolically as well as anabolically is called? a) bipolar b) amphother c) bipartite d) departed e) amphibolic 37 ...
Chap16 Microbial Polysaccharides
... During the growth phase, 3-ketothiolase (catalyzing AcetylCoAacetoacetyl-CoA) is inhibited by free coenzyme A and little PHB is synthesized. When growth ceases or is restricted, metabolism of acetyl-CoA via the TCA cycle decreases as a result of inhibition of citrate synthase by NADH. The decrease ...
... During the growth phase, 3-ketothiolase (catalyzing AcetylCoAacetoacetyl-CoA) is inhibited by free coenzyme A and little PHB is synthesized. When growth ceases or is restricted, metabolism of acetyl-CoA via the TCA cycle decreases as a result of inhibition of citrate synthase by NADH. The decrease ...
Chapter 4 - Colby College Wiki
... • Write the equations for the half-reactions. – Balance all atoms except H and O (balance H and O also if they undergo redox) – Add e- based on oxidation state changes – Balance oxygen atoms using H2O – Balance hydrogen atoms using H+ • Equalize the number of electrons. • Add the half reactions. • I ...
... • Write the equations for the half-reactions. – Balance all atoms except H and O (balance H and O also if they undergo redox) – Add e- based on oxidation state changes – Balance oxygen atoms using H2O – Balance hydrogen atoms using H+ • Equalize the number of electrons. • Add the half reactions. • I ...
Properties of the Major Biological Molecules
... bi-layer (two layers) that forms a bubble. In the middle, all the tails sandwich togetherremember, they are hydrophobic and don’t want to touch the water. On the outside of this bilayer are the heads- remember, they are hydrophilic so they can dissolve in the water. ...
... bi-layer (two layers) that forms a bubble. In the middle, all the tails sandwich togetherremember, they are hydrophobic and don’t want to touch the water. On the outside of this bilayer are the heads- remember, they are hydrophilic so they can dissolve in the water. ...
Baby, don`t stop! - Alexander Mankin Lab
... not clear if any missense or frameshift mutants could be suppressed, but this remains a possibility. Furthermore, not all nonsense mutations are likely to be countered by this approach. This is because competition between release factors and aminoacyl tRNA depends on the composition of sequence flan ...
... not clear if any missense or frameshift mutants could be suppressed, but this remains a possibility. Furthermore, not all nonsense mutations are likely to be countered by this approach. This is because competition between release factors and aminoacyl tRNA depends on the composition of sequence flan ...
B. Basic Concepts of Metabolism
... fashion in which the atoms of the raw materials are rearranged, often one at a time, until the formation of the final product takes place. Each step requires its own enzyme. The sequence of enzymatically-catalyzed steps from a starting raw material to final end products is called an enzymatic pathwa ...
... fashion in which the atoms of the raw materials are rearranged, often one at a time, until the formation of the final product takes place. Each step requires its own enzyme. The sequence of enzymatically-catalyzed steps from a starting raw material to final end products is called an enzymatic pathwa ...
antimicrobial drugs
... Describe what is meant by invasiveness and the mechanisms and factors that affect invasiveness (adherence, penetration, avoidance of phagocytosis, ability to cause damage). ...
... Describe what is meant by invasiveness and the mechanisms and factors that affect invasiveness (adherence, penetration, avoidance of phagocytosis, ability to cause damage). ...
Enzymes–II
... behaviour. Lactose synthetase (Fig. 17−3), for example, catalyzes the synthesis of lactose (a sugar consisting of a galactose and a glucose residue) in the mammary glands. It consists of a catalytic subunit and a modifier subunit. The catalytic subunit alone cannot synthesize lactose. Instead, it ha ...
... behaviour. Lactose synthetase (Fig. 17−3), for example, catalyzes the synthesis of lactose (a sugar consisting of a galactose and a glucose residue) in the mammary glands. It consists of a catalytic subunit and a modifier subunit. The catalytic subunit alone cannot synthesize lactose. Instead, it ha ...
Biosynthesis
Biosynthesis (also called biogenesis or anabolism) is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways. Some of these biosynthetic pathways are located within a single cellular organelle, while others involve enzymes that are located within multiple cellular organelles. Examples of these biosynthetic pathways include the production of lipid membrane components and nucleotides.The prerequisite elements for biosynthesis include: precursor compounds, chemical energy (e.g. ATP), and catalytic enzymes which may require coenzymes (e.g.NADH, NADPH). These elements create monomers, the building blocks for macromolecules. Some important biological macromolecules include: proteins, which are composed of amino acid monomers joined via peptide bonds, and DNA molecules, which are composed of nucleotides joined via phosphodiester bonds.