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37 Cards in this Set
- Front
- Back
What is Metabolism?
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All the reastions used to generate energy-> 2ATP are generated.
Reducing power(Ex: NADH2) and carbon skeletons and the utilization of theses materials for Anablic purposes. |
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Cellulase
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polymer of glucose. breaks down thing to big to fit through porins(600-700 da)
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Catabolic Reactions
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1st step in metablism: Ploymer breakdown of extra-cellulary. can generate monomers and small dimers. (molecules that can go through the porins)following transport into the cytoplasm.
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The sugar must be what to enter the cytoplasm
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activated. involves phosphorylation.
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Glycolytic pathway
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The breakdown of sugar.
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Glucose ->____->____->____
(six Carbon Stage) |
Glucose 6-phosphate(uses ATP and gives off ADP)
Fructose 6-phosphate Fructose 1,6-bisphosphate(uses ATP and gives off ADP) |
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Fructose 1,6-bisphosphate--> and --> both go to -->___-->___-->___-->____-->___-->___
(Three carbon stage |
Glyseraldehyde 3-phosphate and Dihydroxyacetone phosphate-then goes to glyseraldehyde 3-p(Catalized by aldolase)
1,3 bisphosphoglycerate Acid(uses NAD and makes NAPH, only oxidative step in glycolosis) 3-phosphoglyceric Acid(Uses ADP and makes ATP) 2-Phosphoglyceric Acid Phosphoenol pyruvate(dessication reaction->loss of water) Pyruvate (uses ADP and makes ATP. |
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For two glyceraldehydes oxidations to pyruvate we see a net gain of ___ ATPs
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TWO.
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what does Glucose to pyruvate produce
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produces 2 ATP and 2 NADH2
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Every living cell must have __ precuror molecules(carbon skeleton)
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12.
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What is the function of carbon skeletons
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Serve as basic carbon backbones for amino acid biosynthesis, vitamin synthesis; purine/pyrimidins for nucleotides synthesis.
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What are the 6 precursor molecules from glycolsis?
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glucose 6-phophate
Glyceraldehyde 3-phosphate Fructose 6-phosphate Pyruvate Phosphoenolpyruvate 3-phosphoglycerate Acid |
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What are the 2 precursor molecules from pentose phosphae pathway
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Ribulose 5-phosphate
Erythrose 4-phosphate |
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What are the 4 precurser molecules from the TCA cycles
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oxaloacetate
acetyl CoA succinyl CoA alpha ketoglutarate |
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Pentose Phosphate pathway
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get 2 NADH to use as reducing power.
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If no glucose 6-p dehydrogenase wont grow what do u have to add?
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Ribulose 5-p and Erthrose 4-p bc it wont be able to make them. (both are important precursors)
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If all genes are functional to convert precursor molecules to building blocks(amino acids) then it must be a _______
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Prototroph
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If a cell is mutant in its ability to make a precursor molecule then it may be considered a _____
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Auxotroph
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Entner-Doudoroff Pathway is limited to what microbes
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Pseudamones sp
Enterococcus sp Rhizobium sp |
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What does the Entner Doudoroff Pathway do
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uses similar reactions to the pentose phosphate pathway and links them with the glycolytic pathway
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What is a novel intermediate formed by the Entner Doudoroff Pathway and what is its significance
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2-keto-3-deoxy-6-phosphogluconate
It can be used to diagnose diseases with Pseudomones, Rhizobium and Entercoccus. |
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From glycoloysis or Entner-dudoroff the pyruvate formed can then either be used for ____ or ____ and with way depends on ?
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Fermentation or Tricarboylic Acid Cycle.
Which way depends on environmental conditions. 1)Availabilty of termical electron acceptor 2)Availablity of carbon. |
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The ___ cycle is never closed bc the intermediated can get taken away by biosynethsis purposes
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tricarboxylic acid
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With the EMP and the TCA reaction we see ______.
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complete oxidation of a 6C sugar (Glucose) to CO2
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Fementation occurs in the ___ of a __ __ __ electron acceptor.
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absence
suitable exogenous terminal(something from outside) |
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What are suitable exogenous electron acceptors? and why?
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Oxygen
Nitrate CO2;sulfate Bc that can get reduced(accept e-) from more reduced molecule. |
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Fermentations generates
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more reduced compounds
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Why bother with fermentations
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to regenerate NAD to be used in glycolosis.
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In the presence of a suitable exogenous terminal e- acceptor what happens?
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Electron Transport
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what is electron transport
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mvmt of e- through electron transport chain eventually reducing a terminal e- acceptor
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What are the ETC components?
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Hydrogen carriers->Quinones(small non-proteinaceous molecules) and FlavoProteins
Electron carriers-> cytochromes and iron sulfur proteins. |
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What did Peter Michell do?
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"Chemiosmotic Hypothesis"- proton gradient can be harvested into energy.
Harvesting of H+ gradient(from e- transport) through H+ translocating ATP hydrolase to generate ATP. |
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BFO/F Complex does what?
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rotates
catalyzes phosphorylation of ADP + P --> ATP |
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What is Oxidative Phosphorylation
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Sugar is oxidized to CO2
Reducing power is formed PMS formed ATP formed |
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The coupling of sugar(NADH) oxidation to ATP formation via the ETC activities is
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Oxidative Phosphorylation
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What is substrate level phosphorylation
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When ATP is formed by the removal of a PO4 from an organic compound and coupled directly to the phosphorylation of ADP->ATP.
Ex: 1,3 Bisphosphoglycolic acid-->(uses ADP and creates ATP) 3 phosphglycolic acid. |
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In the ETC if oxygen serves as the terminal e- acceptor it is _____
If CO2, NO3, or SO4 serve as the terminal e-acceptor then it is ____. |
Aerobic Respiration
Anaerobic respiration |