03-232 Exam III 2013 Name:__________________________
... Choice B: A short peptide composed entirely of alanine residues (sidechain –CH3) will not readily insert into a bilayer, even though the sidechain of alanine is clearly non-polar. Why? Choice C: Briefly describe the molecular basis for the ion selectivity of the potassium channel, i.e. why is only p ...
... Choice B: A short peptide composed entirely of alanine residues (sidechain –CH3) will not readily insert into a bilayer, even though the sidechain of alanine is clearly non-polar. Why? Choice C: Briefly describe the molecular basis for the ion selectivity of the potassium channel, i.e. why is only p ...
Lipid Metabolism 1. What has a higher stored energy potential per
... unhydrated as compared to glycogen which is very hydrated. 2. Acetyl CoA units are shuttled out of the mitochondria via citrate (which reacts with CoA in the cytosol to produce acetyl CoA and malate). The carbon units are returned to the mitochondria via pyruvate (following decarboxylation of malate ...
... unhydrated as compared to glycogen which is very hydrated. 2. Acetyl CoA units are shuttled out of the mitochondria via citrate (which reacts with CoA in the cytosol to produce acetyl CoA and malate). The carbon units are returned to the mitochondria via pyruvate (following decarboxylation of malate ...
pdf of article - ACG Publications
... Amino acids Amino acid biosynthesis in young plants is regulated by a metabolic network that links nitrogen assimilation with carbon metabolism, being controlled by the metabolism of four central amino acids, namely glutamine, glutamate, aspartate and asparagine. These amino acids are then converted ...
... Amino acids Amino acid biosynthesis in young plants is regulated by a metabolic network that links nitrogen assimilation with carbon metabolism, being controlled by the metabolism of four central amino acids, namely glutamine, glutamate, aspartate and asparagine. These amino acids are then converted ...
75. In yeast, if the electron transport system is shut down because of
... a) Combines with electrons and hydrogen ions to form water b) Combines with carbon to form carbon dioxide c) Combines with carbon dioxide and water to form glucose d) Reduces glucose to form carbon dioxide and water e) Combines with electrons to form CO2 __ 72. When oxygen is present: a) Most cells ...
... a) Combines with electrons and hydrogen ions to form water b) Combines with carbon to form carbon dioxide c) Combines with carbon dioxide and water to form glucose d) Reduces glucose to form carbon dioxide and water e) Combines with electrons to form CO2 __ 72. When oxygen is present: a) Most cells ...
Gene Duplication in the Mo-Fe Protein of Nitrogenase
... • Mistake: using nucleotides, switched to amino acid sequences for the alpha and beta chains. ...
... • Mistake: using nucleotides, switched to amino acid sequences for the alpha and beta chains. ...
Slide 1
... • Some enzymes act as structural components of membranes • In eukaryotic cells, some enzymes reside in specific organelles; for example, enzymes for cellular respiration are located in mitochondria ...
... • Some enzymes act as structural components of membranes • In eukaryotic cells, some enzymes reside in specific organelles; for example, enzymes for cellular respiration are located in mitochondria ...
Willingham, College Biology: Microbes 1 In This Chapter o
... Chapter 8 of The Complete Idiot’s Guide to College Biology, split water. Phototrophic bacteria use all manner of electron sources, from hydrogen sulfide to hydrogen gas to organic molecules. Because phototrophs are almost universally also autotrophs, they obtain their carbon by fixing carbon dioxide ...
... Chapter 8 of The Complete Idiot’s Guide to College Biology, split water. Phototrophic bacteria use all manner of electron sources, from hydrogen sulfide to hydrogen gas to organic molecules. Because phototrophs are almost universally also autotrophs, they obtain their carbon by fixing carbon dioxide ...
General Biochemistry 115:404/504 Lecture and Exam Schedule
... Learning Goals: During this two semester course sequence, students will gain a fundamental understanding of what makes living systems tick at the molecular level. They will also gain an understanding of the experimental methods which give rise to biochemical knowledge. The course will impart a thoro ...
... Learning Goals: During this two semester course sequence, students will gain a fundamental understanding of what makes living systems tick at the molecular level. They will also gain an understanding of the experimental methods which give rise to biochemical knowledge. The course will impart a thoro ...
Energy Transformation — Photosynthesis and Cellular Respiration
... Immediate source: NADH and FADH2, Ultimate source: glucose ...
... Immediate source: NADH and FADH2, Ultimate source: glucose ...
Model Description Sheet
... Primary Citation: Zhang, H., Hao, Q. (2011). Crystal structure of NDM-1 reveals a common ß-lactam hydrolysis mechanism. FASEB Journal. 25:2574-2582. ...
... Primary Citation: Zhang, H., Hao, Q. (2011). Crystal structure of NDM-1 reveals a common ß-lactam hydrolysis mechanism. FASEB Journal. 25:2574-2582. ...
Regents Chemistry
... Be able to explain Esterification, Fermentation, Saponification reactions and be able to recognize these reactions o Know that fermentation requires an enzyme such as zymase o Know that glycerol is a by product of saponification o Know that esters are made from alcohols and organic acids; the alcoho ...
... Be able to explain Esterification, Fermentation, Saponification reactions and be able to recognize these reactions o Know that fermentation requires an enzyme such as zymase o Know that glycerol is a by product of saponification o Know that esters are made from alcohols and organic acids; the alcoho ...
Lactic Acid Fermentation vs. Alcoholic Fermentation
... of six-carbon sugars, e.g. sucrose or lactose) are converted into cellular energy and the metabolite lactate. There are several uses of this type of fermentation, one of them to produce bacteria and another use to make yogurt. Organisms capable of doing it: ...
... of six-carbon sugars, e.g. sucrose or lactose) are converted into cellular energy and the metabolite lactate. There are several uses of this type of fermentation, one of them to produce bacteria and another use to make yogurt. Organisms capable of doing it: ...
BIOL241cell3JUN2012
... to fit through channel proteins (glucose, amino acids): – molecule binds to receptor site on carrier protein – protein changes shape, molecules pass through – receptor site is specific to certain molecules ...
... to fit through channel proteins (glucose, amino acids): – molecule binds to receptor site on carrier protein – protein changes shape, molecules pass through – receptor site is specific to certain molecules ...
Metabolic Engineering for Fuels and Chemicals
... (Mixed acid, ethanol, lactate, acetate, pyruvate, glutamate, succinate, alanine, citrate) ¾ATP/ADP? ...
... (Mixed acid, ethanol, lactate, acetate, pyruvate, glutamate, succinate, alanine, citrate) ¾ATP/ADP? ...
powerpoint slides
... Then the total number of possibilities is 20 choices for the first position times 20 for the second position times 20 to the third .... = 20 to the 600 = 4*10780 different proteins possible with lengths of 600 amino acids. ...
... Then the total number of possibilities is 20 choices for the first position times 20 for the second position times 20 to the third .... = 20 to the 600 = 4*10780 different proteins possible with lengths of 600 amino acids. ...
Understanding an Enzyme Active Site
... Protein secondary structure (alpha helices and beta sheets) provides that stable scaffolding upon which the critical active site amino acids can be precisely positioned in 3D space. The 2-3 amino acids that come together in 3D space to create an enzyme active site are very far apart in the linear se ...
... Protein secondary structure (alpha helices and beta sheets) provides that stable scaffolding upon which the critical active site amino acids can be precisely positioned in 3D space. The 2-3 amino acids that come together in 3D space to create an enzyme active site are very far apart in the linear se ...
Next Question
... B. Describe how the structures of proteins differ from the structures of carbohydrates. ● Proteins contain nitrogen, while carbohydrates do not. The elements in carbohydrates are used to create ring-shaped monosaccharides, which are then strung together into di- and polysaccharides. There are only ...
... B. Describe how the structures of proteins differ from the structures of carbohydrates. ● Proteins contain nitrogen, while carbohydrates do not. The elements in carbohydrates are used to create ring-shaped monosaccharides, which are then strung together into di- and polysaccharides. There are only ...
Unit 2 - Protein Synthesis AAB - bushelman-hap
... 1. A second tRNA bonds with the next three bases of the mRNA, the amino acid links onto the amino acid of the first tRNA via a peptide bond. (Reminder) Each tRNA specific for one amino acid only, but some amino acids coded for by up to 6 codons. Order of bases in mRNA codons determine which tRNA ant ...
... 1. A second tRNA bonds with the next three bases of the mRNA, the amino acid links onto the amino acid of the first tRNA via a peptide bond. (Reminder) Each tRNA specific for one amino acid only, but some amino acids coded for by up to 6 codons. Order of bases in mRNA codons determine which tRNA ant ...
Healthy pigs with less use of antibiotics
... an important role in this. As an alternative different types of products could play a role. Organic acids or essential oils (plant extracts) could be used for their antimicrobial activity, so focusing again on lowering pathogens. This could be part of the strategy, but only focusing on lowering path ...
... an important role in this. As an alternative different types of products could play a role. Organic acids or essential oils (plant extracts) could be used for their antimicrobial activity, so focusing again on lowering pathogens. This could be part of the strategy, but only focusing on lowering path ...
Exam 2
... E. ____________ Integral proteins can be reversibly bound to the membrane through a lipid anchor. F. ____________ A potassium channel is able to exclude the smaller sodium ion through unfavorable steric interactions. G. ____________ Sucrose is a non-reducing sugar because it contains a hemiacetal fu ...
... E. ____________ Integral proteins can be reversibly bound to the membrane through a lipid anchor. F. ____________ A potassium channel is able to exclude the smaller sodium ion through unfavorable steric interactions. G. ____________ Sucrose is a non-reducing sugar because it contains a hemiacetal fu ...
10B-Oxidation and Ketone bodies
... * Lipid Biosynthesis - These are endergonic and reductive reactions, use ATP as source of energy and reduced electron carrier usually NADPH as reductant. * Fatty acid synthesis: - F.A synthesis is not the reversal of the degradative pathway, different sets of enzymes. ...
... * Lipid Biosynthesis - These are endergonic and reductive reactions, use ATP as source of energy and reduced electron carrier usually NADPH as reductant. * Fatty acid synthesis: - F.A synthesis is not the reversal of the degradative pathway, different sets of enzymes. ...
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.