Page 304 - Chemistry eBook

In one method of making bread, starch is broken down into glucose. Zymase, an enzyme
present in yeast, acts as a catalyst for the reaction in which the glucose reacts to produce
Base your answers to questions 83 through 85 on the information below.
ethanol and carbon dioxide. The carbon dioxide gas causes the bread dough to rise. The
balanced equation below represents the catalyzed reaction.
In one method of making bread, starch is broken down into glucose. Zymase, an enzyme
12
ethanol and carbon dioxide. The carbon dioxide gas causes the bread dough to rise. The
84 Ident
83 Identify the type of organic reaction represented by this equation. [1]
85 State how the catalyst, zymase, increases the rate of this reaction. [1]
84 Identify the functional group in an ethanol molecule. [1]
85 State how the catalyst, zymase, increases the rate of this reaction. [1]
Jan 2013 #85
Answer
The catalyst lowers the activation energy.
S
zymase
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ple Regents Que
present in yeast, acts as a catalyst for the reaction in which the glucose reacts to produce C6H O (aq) ⎯⎯⎯⎯→ 2CH CH OH(aq) 􏰀 2CO (g)
2
83 Identify the type of organic reaction represented by this equation. [1]
balanced equation below represents the catalyzed reaction.
6
3
2
stio
ns
zymase
C6H12O6(aq) ⎯⎯⎯⎯→ 2CH3CH2OH(aq) 􏰀 2CO2(g)
ify the functional group in an ethanol molecule. [1]
303 © UNIT 8: KINETICS AND EQUILIBRIUM