. Ethanol fermentation:
Steps include:
Glucose 2 -->ethanol + 2 carbon dioxide
C6H12O6 -->2 C2H5OH + 2 CO2
how will sugar, splenda, and equal impact fermentation? will fermentation occur? whybor why not?
During a lab with the fermentation of sugar, the question asks: Why is the amount of gas you measured only an estimate of the ATP produced? Consider what you know about liquids and gases. How can you change the setup to make it more accurate?
6. Questions concerning the purpose of fermentation reactions in the cell: Why does alcohol fermentation occur to a much greater extent under a conditions? In other words, what purpose do the fermentation reactions serve for the yeast cell? a. nacrobic conditions vs. acrobic b. Which enzyme within hu mans serves the same purpose under anaerobic conditions as alcohol dehydrogenase does within yeast? c. Within any cell, the concentration of which metabolites determine the fate of pyruvate?
4) In the absence of O2 fermentation will occur, why?.....what does it yield that the organism needs from these reactions? Why? 5) Gluconeogenesis is the production of glucose from non-carbohydrate precursors. a. What distinguishes glycolysis from gluconeogenesis? (hints: substrates, energetics of reactions, where do they occur) b. What molecule is a key regulator of glycolysis and gluconeogenesis? What does it do? (p. 245)
For biology lab we tested different sugar solutions in yeast. As
you can see from the picture below, this is the effect the sugars
had on the yeast in their respiration rates (carbon dioxide
production).
I need help answering some questions.
How did concentration play into the rate of
respiration? (NOT ONLY FOR GLUCOSE, the other sugars too
please!)
a) Mainly how come 5% and 10% are so close even though
10% is higher conentration?
b) And why is sucrose...
1. Why do yeasts perform alcohol fermentation? 2. What is the chemical reaction for fermentation? 3. Which are the reactants in this reaction? Which are the products? 4. What is the gas that accumulates in the bag, causing it to inflate? In addition to this gas, what is another product of this process? Can you think of one example when either of these products is useful during cooking/baking? 5. How does inflation of the bag correlate with the amount of...
1. A reaction of great social significance is the fermentation of sugar with yeast. This is Zero order (in sugar) reaction, where the yeast is a catalyst (it does not enter the reaction itself). If a 0.5 liter bottle contains 4 grams of sugar, and it takes 30 minutes to convert 50% of the sugar, what is the kinetic rate constant? 2. An oil storage area was abandoned 19 years ago. Oil spilled on the ground had saturated the soil...
A gas evolved during the fermentation of sugar was collected. After purification, its volume was found to be 25.0 L at 22.5°C and 702 mmHg. How many moles of gas were collected? R = 0.08206 L×atm/K×mol.
being released. 72. The bubbles coming out from the flask containing yeast, sugar & water were the result of a glucose b. CO2 c. alcohol d. 02 73. What was the role of sugar in the fermentation exercise? a. speeded up the reactions b. final product c. was broken down to release energy d. reagent 74. The provided the necessary enzymes and ATP to produce alcohol a. sugar b. yeast c. carbon dioxide d.oxygen gas 75. Why do cells undergo...
Question 13 (4 points) The unbalanced equation below describes the process of fermentation of sugar to yield ethanol: C6H1206 → C2H4O + CO2 For every 1 mol of CH 20 fermented, how many grams of ethanol, CyH60 are produced? 0928 92 g 0 466 140 g 0.26 g
In our lab, we will be preparing ethanol from the fermentation of sugar with the help of enzymes present in yeast. "An ethanol concentration of 12% or higher is toxic to yeast; therefore distillation is required to produce ethanol in higher concentrations, In this experiment, ethanol will be produced from sucrose (table sugar) and yeast, and the restulting fermentate will be distilled to produce an ethanol-water mixture that is typically at least 90% ethanol. Note that 100% ethanol cannot be...