In a fermentation reaction, your bacteria were able to ferment maltose but not sucrose. Which enzyme...
In a fermentation reaction, your bacteria were able to ferment maltose but not sucrose. Which enzyme was your bacteria able to make and which was it unable to make (specify)?
Homework Answers
Fermenting bacteria have characteristic sugar fermentation patterns, i.e., they can metabolize some sugars but not others. eg: Neisseria meningitidis ferments glucose and maltose, but not sucrose and lactose, while Neisseria gonorrhoea ferments glucose, but not maltose, sucrose or lactose.
Such fermentation patterns can be used to identify and classify
bacteria.
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In a fermentation reaction, your bacteria were able to ferment
maltose but not sucrose. Which enzyme...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends...
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
IlI You work in a food fermentation factory, and you have been given three different bacteria...
IlI You work in a food fermentation factory, and you have been given three different bacteria strains (their metabolic chart is available below).Your task is to ferment milk and produce yogurt. Answer the following questions. Strain 1 Strain 2 Strain 3 Col NAC Ethanal PLACTARE 1. What is the fermentation group does each strain belong to? 2. Which strain would you use to make yogurt? and why? 3. Would you use any of these strains to ferment dough and make...
Practice Questions 1. You were given a bacteria for unknown investigation. To begin with, you performed...
Practice Questions 1. You were given a bacteria for unknown investigation. To begin with, you performed a Methyl Red test after inoculating and incubating them for 48 hours. You obtained no color change after addition of Methyl Red. You proceed forward and performed Voges Proskauer test. For this particular test, you obtained a red color change after addition of Barritt solution A and B. From the result, what kind of inference can you draw from the 2 results obtained about...
Activity 3: Yeast Fermentation of Different Carbohydrates? Experiments test the predictions made by a hypothesis. The...
Activity 3: Yeast Fermentation of Different Carbohydrates? Experiments test the predictions made by a hypothesis. The hypothesis should be stated very clearly and unambiguously. If the results of the experiment were predicted by the hypothesis, the results support the hypothesis (NOT “prove the hypothesis is true"). If the results are different than those predicted by the hypothesis, then the hypothesis is retested, modified or discarded. Many times an experiment is actually testing the Null Hypothesis. The null hypothesis states that...
1) Many species of bacteria are able to ferment sugars. This process: a. involves the reduction...
1) Many species of bacteria are able to ferment sugars. This process: a. involves the reduction of organic compounds, which serve as terminal electron acceptors b. involves the oxidation of NADH to NAD+ c. requires a fully functional electron transport chain so that a proton gradient can be generated to drive the synthesis of ATP d. answers (a) and (b) are both correct e. answers (a), (b), and (c) are all correct 2) Which of the following statements are true...
Some bacteria make an enzyme called β-galactosidase that catalyzes the breakdown of the polysaccharide β-galactoside into...
Some bacteria make an enzyme called β-galactosidase that catalyzes the breakdown of the polysaccharide β-galactoside into monomers of galactose. A population of bacteria were found with an amino acid mutation within the active site of β-galactosidase protein, and these bacteria were unable to breakdown β-galactoside polymers. A) How would you identify a population of bacteria with mutant β.galac tosidase in terms of the relative concentration of β-galactoside and galactose in their cells? B.) Explain how the amino acid mutation could...
Which one of the following tests are similar to one another because they indicate that bacteria...
Which one of the following tests are similar to one another because they indicate that bacteria that can produce exoenzymes? a) DNAse and tryptophanase b) Lipase and DNase c) decarboxylase and casease d) lipase and oxidase If bacteria can make oligo 1,6 gucosidase it is also expressing....................... and you will need................. to prove it. a) DNAse, methyl red b) amylase, iodine c) Tryptophanase, iron d) casease, and no indicator I can ferment glucose and can grow in anaerobic environment via...
Name: ALCOHOL FERMENTATION EXPERIMENT Premise: Yeast are capable of carrying out an anaerobic energy production pathway...
Name: ALCOHOL FERMENTATION EXPERIMENT Premise: Yeast are capable of carrying out an anaerobic energy production pathway called fermentation (anaerobic glycolysis). The waste products produced include CO2 and alcohol. All that is necessary to carry out this reaction is an adequate supply of sugar and a lack of oxygen. CO2 NADH + H TPP, NAD+ OH OH Mg2+ C=0 CH2 pyruvate alcohol CH3 decarboxylase CH 3 dehydrogenase CH3 Pyruvate Acetaldehyde Ethanol Without the potential to move into the tricarboxylic acid cycle...
EXERCISE 5B CELLULAR RESPIRATION Alcoholic Fermentation by Yeast OBJECTIVES the completion of thi...
EXERCISE 5B CELLULAR RESPIRATION Alcoholic Fermentation by Yeast OBJECTIVES the completion of this exercise the student should be able to Upon 1 distinguish between the dependent and independent variables in a controlled experiment. . formulate a basic hypothesis. measure the volume of carbon dioxide generated by anacrobic fermentation in baker's 3. yeast. 4. express data in tabular form. 5, relate data generated in an experiment to a hypothesis previously formulated 6. graph data, calculate the slope of a line, and...
If your muscle cells used alcohol fermentation instead of lactic acid fermentation, which of the following...
If your muscle cells used alcohol fermentation instead of lactic acid fermentation, which of the following might occur under low oxygen conditions? A) You would no longer be able to regenerate NAD+ B) You would no longer be able to produce ATP C) You would produce ethanol instead of lactic acid D) You would produce less CO2
Which of the diagrams illustrates the way in which the rate of an enzyme-controlled reaction depends on substrate concentration? * А B Rate of reaction MÚN Substrate concentration A B D When starch and amylase are mixed in the presence of iodine solution, the blue-black colour rapidly disappears. This is due to the formation of which molecule? * glucose O glycogen sucrose O maltose Which of the following enzyme groups can catalyse oxidation reactions? * O phosphorylases isomerases hydrolases dehydrogenases...
IlI You work in a food fermentation factory, and you have been given three different bacteria strains (their metabolic chart is available below).Your task is to ferment milk and produce yogurt. Answer the following questions. Strain 1 Strain 2 Strain 3 Col NAC Ethanal PLACTARE 1. What is the fermentation group does each strain belong to? 2. Which strain would you use to make yogurt? and why? 3. Would you use any of these strains to ferment dough and make...
Activity 3: Yeast Fermentation of Different Carbohydrates? Experiments test the predictions made by a hypothesis. The hypothesis should be stated very clearly and unambiguously. If the results of the experiment were predicted by the hypothesis, the results support the hypothesis (NOT “prove the hypothesis is true"). If the results are different than those predicted by the hypothesis, then the hypothesis is retested, modified or discarded. Many times an experiment is actually testing the Null Hypothesis. The null hypothesis states that...
Some bacteria make an enzyme called β-galactosidase that catalyzes the breakdown of the polysaccharide β-galactoside into monomers of galactose. A population of bacteria were found with an amino acid mutation within the active site of β-galactosidase protein, and these bacteria were unable to breakdown β-galactoside polymers. A) How would you identify a population of bacteria with mutant β.galac tosidase in terms of the relative concentration of β-galactoside and galactose in their cells? B.) Explain how the amino acid mutation could...
Name: ALCOHOL FERMENTATION EXPERIMENT Premise: Yeast are capable of carrying out an anaerobic energy production pathway called fermentation (anaerobic glycolysis). The waste products produced include CO2 and alcohol. All that is necessary to carry out this reaction is an adequate supply of sugar and a lack of oxygen. CO2 NADH + H TPP, NAD+ OH OH Mg2+ C=0 CH2 pyruvate alcohol CH3 decarboxylase CH 3 dehydrogenase CH3 Pyruvate Acetaldehyde Ethanol Without the potential to move into the tricarboxylic acid cycle...
EXERCISE 5B CELLULAR RESPIRATION Alcoholic Fermentation by Yeast OBJECTIVES the completion of this exercise the student should be able to Upon 1 distinguish between the dependent and independent variables in a controlled experiment. . formulate a basic hypothesis. measure the volume of carbon dioxide generated by anacrobic fermentation in baker's 3. yeast. 4. express data in tabular form. 5, relate data generated in an experiment to a hypothesis previously formulated 6. graph data, calculate the slope of a line, and...
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