Homework Answers
Without oxygen , a cell makes lactic acid.
When cells dont get enough oxygen , for meeting their energy requirements they start to make use of a pathway called lactic acid fermentation.which generates lactic acid, or lactate as byproducts of glucose breakdown.This is anaerobic metabolism.
Lactic acid fermentation is a metabolic process by which glucose and other six carbon sugars like sucrose ,lactose etc,are converted in to cellular energy and lactate, which is lactic acid in solution.
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Without oxygen, a cell: 1) will not break down glucose for energy O2) cannot use ATP...
When a cell breaks down glucose to produce ATP lots of hydrogen ions are produced. When...
When a cell breaks down glucose to produce ATP lots of hydrogen ions are produced. When a lot of hydrogen ions are present in a solution, that solution is an acid. If a lot of acid is present a cell would die. How does a living cell get rid of all the hydrogen ions that id produces while making ATP? It combines the hydrogen ions with oxygen to make water. It uses the hydrogen ions to produce the carbon dioxide...
in a cell that is in need of energy, glucose can be (REDUCEE/ORXIDIZED) to pyruvate which,...
in a cell that is in need of energy, glucose can be (REDUCEE/ORXIDIZED) to pyruvate which, in the presence of oxygen, can ultimately lead to production of (Lactic acid/ ethanol&CO2/CO2&water)In the absence of oxygen, pyruvate can be directly (Oxidized/Reduced) by (NATH/NAD+) to yield (Lactic acid/ ethanol&CO2/CO2&water) or be (Oxidized/Reduced) to an intermediate first and then converted to (Lactic acid/ ethanol&CO2/CO2&water).
* GWhe + Question 4 When glucose and oxygen become carbon dioxide plus water (cell resp...
* GWhe + Question 4 When glucose and oxygen become carbon dioxide plus water (cell resp reaction) which of the following is true: The reaction is.. positive delta G and glucose is oxidized negative delta G and glucose is oxidized positive delta Gandslucose is reduced negative delta Gandducose is reduced Question 5 If an enzyme facilitates an endergonic reaction, which of these is the mo probable to be true? GW obec + If an enzyme facilitates an endergonic reaction, which...
Suppose a yeast cell uses 1 mole of glucose for energy production. No oxygen is available....
Suppose a yeast cell uses 1 mole of glucose for energy production. No oxygen is available. What will be the net yield of ATP in moles? Select one: a. 0 b. 1 c. 2 d. 4 e. 36
QUESTION 1 Which of the following processes/pathways CANNOT occur in the absence of O2? Oxidative phosphorylation...
QUESTION 1 Which of the following processes/pathways CANNOT occur in the absence of O2? Oxidative phosphorylation Substrate level phosphorylation Oxidation of NADH Photosynthesis Fermentation 1 points QUESTION 2 Phosphofructokinase (PFK-1) is one of the most regulated enzymes in metabolism. Which of the following would be expected to be an allosteric inhibitor of PFK-1? Glucose Fructose-6-phosphate Acetyl CoA AMP 1 points QUESTION 3 Which of the following is a reactant of the first reaction of glycolysis? Glucose ADP ATP...
If a cell does not have mitochondria, it cannot harvest the entire energy stored in a...
If a cell does not have mitochondria, it cannot harvest the entire energy stored in a molecule of glucose? A)True B)False Phosphofructokinase is an enzyme that is important for the breakdown of the glucose molecule to generate ATP. In regards to that, when the ATP levels are high, the phosphofructokinase is inhibited. What do you expect to happen to the enzyme when the levels of ATP within the cell drop? 1.The enzyme will be activated. 2.The enzyme will be deactivated....
The rates of O2 and glucose consumption by a bacterial culture are shown in Figure (see...
The rates of O2 and glucose consumption by a bacterial culture are shown in Figure (see attachment if can't see). Assume a bacterial culture was grown in a glucose medium without oxygen (O2). Then 02 was added at the time marked X. The data indicate that - Glucose consumption - - I - - -- No. of cells ---- O, consumption Time - A No. of cells - - - -------- - - - 0consumption Time A. these bacteria don't...
5. Bacterial species break down glucose to pyruvate using a variety of metabolic pathways. If acidic...
5. Bacterial species break down glucose to pyruvate using a variety of metabolic pathways. If acidic products are produced, pH indicators can show positive glucose fermentation by the presence of acid. However, some bacteria use metabolic pathways that produce acid products which then quickly change to neutral end-products such as the butylene glycol pathway, which produces neutral end products, including acetoin and 2,3- butanediol. Other organisms use the mixed acid pathway, which produces acidic end products such as lactic, acetic,...
Question #1: In a mitochondrion, the TCA cycle cannot continue on indefinitely without oxygen because the...
Question #1: In a mitochondrion, the TCA cycle cannot continue on indefinitely without oxygen because the electron transport chain will be incapable of reducing NADH and FADH2. a.) True b.) False Question #2:How much energy (in the form of ATP) would one get from oxidation of 1 pyruvate molecule if the pH gradient was destroyed in the mitochondrion? a.) 1 ATP b.) 2 ATP c.) 10 ATP d.) 11.5 ATP e.) 12.5 ATP Question #3: The Fe-S clusters in the...
QUESTION 12 A eukaryotic cell can use glucose (C6H1206) and hexanoic acid (C6H1402) as fuels for...
QUESTION 12 A eukaryotic cell can use glucose (C6H1206) and hexanoic acid (C6H1402) as fuels for cellular respiration. On the basis of their structural formulas, which of these is more reduced? a hexanoic acid glucose Both are oxidized Cannot be determined QUESTION 13 Which of the substances in question 12 releases less energy per gram on complete combustion to CO2 and H20? Hexanoic acid O glucose Both release the same amount of energy as they are in equilibrium Cannot be...
* GWhe + Question 4 When glucose and oxygen become carbon dioxide plus water (cell resp reaction) which of the following is true: The reaction is.. positive delta G and glucose is oxidized negative delta G and glucose is oxidized positive delta Gandslucose is reduced negative delta Gandducose is reduced Question 5 If an enzyme facilitates an endergonic reaction, which of these is the mo probable to be true? GW obec + If an enzyme facilitates an endergonic reaction, which...
The rates of O2 and glucose consumption by a bacterial culture are shown in Figure (see attachment if can't see). Assume a bacterial culture was grown in a glucose medium without oxygen (O2). Then 02 was added at the time marked X. The data indicate that - Glucose consumption - - I - - -- No. of cells ---- O, consumption Time - A No. of cells - - - -------- - - - 0consumption Time A. these bacteria don't...
5. Bacterial species break down glucose to pyruvate using a variety of metabolic pathways. If acidic products are produced, pH indicators can show positive glucose fermentation by the presence of acid. However, some bacteria use metabolic pathways that produce acid products which then quickly change to neutral end-products such as the butylene glycol pathway, which produces neutral end products, including acetoin and 2,3- butanediol. Other organisms use the mixed acid pathway, which produces acidic end products such as lactic, acetic,...
QUESTION 12 A eukaryotic cell can use glucose (C6H1206) and hexanoic acid (C6H1402) as fuels for cellular respiration. On the basis of their structural formulas, which of these is more reduced? a hexanoic acid glucose Both are oxidized Cannot be determined QUESTION 13 Which of the substances in question 12 releases less energy per gram on complete combustion to CO2 and H20? Hexanoic acid O glucose Both release the same amount of energy as they are in equilibrium Cannot be...
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