THINK Answer this question individually 1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the presence of P PAIR Answert Answer the following questions with a partner: 2. Which glycolytic reactions require ? 3. Several glycolytic intermediates contain phosphate. Where did these groups come from during the reactions? SHAREAs a class As a class, discuss the following questions: 4. How much P, is required to generate one CD, 5. Is CO, generation the most reliable way to measure ethanol fermentation? Why or why not?
THINK Answer this question individually 1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the presence of P PAIR Answert Answer the following questions with a partner: 2. Which glycolytic reactions require ? 3. Several glycolytic intermediates contain phosphate. Where did these groups come from during the reactions? SHAREAs a class As a class, discuss the following questions: 4. How much P, is required to generate one CD, 5. Is CO, generation the most reliable way to measure ethanol fermentation? Why or why not?
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
Related questions
Question
![Lactate +
Lactate dehydrogenase
NAD+
NADH + H
NAD+
NADH + H
Pyruvate
dehydrogenase
Acetyl-CoA
synthetase
AMP
+ P*P
ATP
+ CoA
NADH + H
-COA
Glucose
NAD+
CO₂
Pyruvate
COA
Glycolysis
Phospho-
transacetylase
Acetyl-CoA
Pyruvate
formate lyase
Formate
Acetate
kinase
P₁
COA
Acetyl-phosphate
ADP
ATP
NADH
+ H
Acetate
Aldehyde
dehydrogenase
NAD*
Acetaldehyde
NADH + H
COA
NAD+
Alcohol
dehydrogenase
Ethanol
ADHE](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2fe2d707-0980-4bdc-a9f0-f834c717735f%2F838f7d2c-e7c3-43c4-b396-41cd5c676767%2F4cd7kkk_processed.png&w=3840&q=75)
Transcribed Image Text:Lactate +
Lactate dehydrogenase
NAD+
NADH + H
NAD+
NADH + H
Pyruvate
dehydrogenase
Acetyl-CoA
synthetase
AMP
+ P*P
ATP
+ CoA
NADH + H
-COA
Glucose
NAD+
CO₂
Pyruvate
COA
Glycolysis
Phospho-
transacetylase
Acetyl-CoA
Pyruvate
formate lyase
Formate
Acetate
kinase
P₁
COA
Acetyl-phosphate
ADP
ATP
NADH
+ H
Acetate
Aldehyde
dehydrogenase
NAD*
Acetaldehyde
NADH + H
COA
NAD+
Alcohol
dehydrogenase
Ethanol
ADHE
![10_UG_26563_ch09_167-184.indd 175
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Yeast Fermentation
The unicellular fungus Saccharomyces cerevisiae is used in the food industry to ferment sugars.
The rate of fermentation is measured by CO₂ production. The addition of inorganic phosphate
increases this rate.
THINK Answer this question individually:
1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the
presence of P?
PAIR Answer the following questions with a partner:
2. Which glycolytic reactions require P?
3. Several glycolytic intermediates contain phosphate. Where did these groups come from
during the reactions?
SHARE
4. How much P, is required to generate one CO₂?
As a class, discuss the following questions:
5. Is CO₂ generation the most reliable way to measure ethanol fermentation?
Why or why not?
HANDOUT
175
23/03/17 2:02 pm
Page
1
of 4
......
ZOOM +
K](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2fe2d707-0980-4bdc-a9f0-f834c717735f%2F838f7d2c-e7c3-43c4-b396-41cd5c676767%2Fv3abws_processed.png&w=3840&q=75)
Transcribed Image Text:10_UG_26563_ch09_167-184.indd 175
Press esc to exit full screen
Yeast Fermentation
The unicellular fungus Saccharomyces cerevisiae is used in the food industry to ferment sugars.
The rate of fermentation is measured by CO₂ production. The addition of inorganic phosphate
increases this rate.
THINK Answer this question individually:
1. Why does the fermentation of sugars, such as glucose and fructose, depend upon the
presence of P?
PAIR Answer the following questions with a partner:
2. Which glycolytic reactions require P?
3. Several glycolytic intermediates contain phosphate. Where did these groups come from
during the reactions?
SHARE
4. How much P, is required to generate one CO₂?
As a class, discuss the following questions:
5. Is CO₂ generation the most reliable way to measure ethanol fermentation?
Why or why not?
HANDOUT
175
23/03/17 2:02 pm
Page
1
of 4
......
ZOOM +
K
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