2 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781264439218
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 6, Problem 3A
Summary Introduction
Introduction:
The cells use the ATP (adenosine triphosphate) molecules for carrying out the energy-requiring processes. The ATP is the high energy phosphate compound. The energy of the cell is stored in the bonds of the ATP molecule. Hence, it is also referred to as the currency of the cell.
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oxidase
12 Cyanide is a toxic chemical that hinders the production of ATP by inhibiting the enzyme cytochrome
a. Using the graph to explain whether cyanide's inhibition of cytochrome oxidase is competitive or non
competitive inhibition. Provide evidence to support your answer.
b. Using the graph below, draw an additional curve on the graph here you would expect the other type of
inhibition to lie and label the lines competitive and non competitive inhibitor.
Reaction
Rate
↑
-Without Cyanide ->
With Cyanide
Substrate Concentration ㅋ
Question 23
An enzyme has a single active site at which it can bind and hydrolyze either X or
Y but the enzyme cannot bind X and Y at the same time. Which of the following
statements are TRUE?
Multiple answers: Multiple answers are accepted for this question
Select one or more answers and submit. For keyboard navigation... SHOW MORE V
The Km for X will be affected if Y is present in the reaction mixture.
a
Y is a competitive inhibitor of X.
The Km for X will increase.
d.
The V for X will be affected if Y is present in the reaction mixture.
max
pH dependence of Vmax reflects the ionization state of catalytic site
e
residues.
Consider the following: X and Y are methanol (poisonous) and ethanol
respectively. If the Km for X = 0.01 M and the Km for Y = 0.001 M then
0.01 M Y is 10 times the concentration of Y required for 0.5 Vmax.
Addition of an enzyme to a chemical reaction increases the ratio of
g
products to reactants (Keg).
Relating to bioenergetics:
a. The equilibrium constant for a particular reaction is 6.8 x 10-5 which makes this reaction exergonic. True or False?b. All processes that occur in the universe are spontaneous and have low enough activation energies that molecules can often overcome the energy barrier. True or False?c. ATP has a highly negative free energy change in part because the negative charges on the oxygens repel each other in ATP but less so in ADP. True or False?
Chapter 6 Solutions
2 SEM ACC W/RAVEN CARDED
Ch. 6.1 - Prob. 1LOCh. 6.1 - Prob. 2LOCh. 6.1 - Describe the nature of redox reactions.Ch. 6.2 - Explain the laws of thermodynamics.Ch. 6.2 - Prob. 2LOCh. 6.2 - Contrast the course of a reaction with and without...Ch. 6.3 - Describe the role of ATP in short-term energy...Ch. 6.3 - Prob. 2LOCh. 6.4 - Discuss the specificity of enzymes.Ch. 6.4 - Explain how enzymes bind to their substrates.
Ch. 6.4 - Prob. 3LOCh. 6.5 - Prob. 1LOCh. 6.5 - Prob. 2LOCh. 6.5 - Prob. 3LOCh. 6 - Prob. 1DACh. 6 - A covalent bond between two atoms represents what...Ch. 6 - During a redox reaction the molecule that gains an...Ch. 6 - Prob. 3UCh. 6 - A spontaneous reaction is one in which a. the...Ch. 6 - Prob. 5UCh. 6 - Which of the following is NOT a properly of a...Ch. 6 - Where is the energy stored in a molecule of ATP?...Ch. 6 - Prob. 1ACh. 6 - Which of the following statements is NOT true...Ch. 6 - Prob. 3ACh. 6 - Prob. 4ACh. 6 - Enzymes have similar responses to both changes in...Ch. 6 - Prob. 6ACh. 6 - Examine the graph showing the rate of reaction...Ch. 6 - Phosphofructokinase functions to add a phosphate...
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