Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Question
Chapter 33.1, Problem 2CC
Summary Introduction
To explain:
The requirement of vitamins in very small amounts.
Introduction:
The organic moleculesrequired for the efficient functioning of the enzymes in the
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Understanding how enzymes work
1) Excluding enzymes, for example, that work in the stomach's low pH, describe the working conditions for most enzymes in the human body.
2) Describe the effect of enzymes on the rate of reactions that they catalyze.
3) Define the transition state in a chemical reaction and how an enzyme functions during the transition state.
8). Which statement best describes
1 point
the enzyme represented in the
graphs?
O 10 20 30 40 50 60
O 2 4 6
10 12
Temperature ("C)
PH
(1) This enzyme works best at a
temperature of 50°C and a pH of 12.
(2) Temperature and pH have no effect on
the action of this enzyme.
(3) This enzyme works best at a
temperature above 50°C and a pH above 12.
(4) This enzyme works best at a
temperature of 35°C and a pH of 8.
Relative Rate of
Enzyme Action
Relative Rate of
Enzyme Action
Estimate the concentration of an enzyme in a living cell. Assume that fresh tissue is 80% water and all of it is intracellular, the total soluble protein in a cell represents 15% of the weight, all the soluble proteins are enzymes, the average weight of a protein is 150000 and about 1000 different enzymes are present.
Chapter 33 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 33.1 - An animal requires 20 amino acids to make...Ch. 33.1 - Prob. 2CCCh. 33.1 - WHAT IF? if a zoo animal eating ample food shows...Ch. 33.2 - Prob. 1CCCh. 33.2 - In what sense are nutrients from a recently...Ch. 33.2 - Prob. 3CCCh. 33.3 - How does swallowed food reach the stomach of a...Ch. 33.3 - Explain why a proton pump inhibitor, such as the...Ch. 33.3 - Prob. 3CCCh. 33.4 - Prob. 1CC
Ch. 33.4 - Prob. 2CCCh. 33.4 - Prob. 3CCCh. 33.5 - Prob. 1CCCh. 33.5 - The energy required to maintain each gram of body...Ch. 33.5 - Prob. 3CCCh. 33 - The mammalian trachea and esophagus both connect...Ch. 33 - Which organ is incorrectly paired with its...Ch. 33 - Which of the following is not a major activity of...Ch. 33 - Prob. 4TYUCh. 33 - Prob. 5TYUCh. 33 - If you were to jog 1 km a few hours after lunch,...Ch. 33 - Prob. 7TYUCh. 33 - Prob. 8TYUCh. 33 - FOCUS ON EVOLUTION The human esophagus and trachea...Ch. 33 - Prob. 10TYUCh. 33 - Prob. 11TYU
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- A) Myth: Enzymes are specific for one substrate. Fact: Like most enzymes, alliinase can act on multiple different substrates. Explain why most enzymes can act on more than one substrate compound. (Refer to the “Alliin-like Substrates" panel in your answer.)arrow_forwardHb serves as our model for regulation of enzyme reaction rates. But Hb is not an enzyme. Explain the reasoning of Jacque Monod and his colleagues for invoking Hb as a "model enzyme."arrow_forwardCan u help me to explain to me, please? I stuggled.arrow_forward
- Briefly describe 1 way which enzyme activity can be regulated in the cell. How do the kinetics of a regulatory enzyme differ from a non-regulated enzyme?arrow_forward. Students carry out a laboratory experiment with avidin (a protein in eg white) having a very high aflinity for biotin enzymes. Which enzyme of glucose metabolism would be inhibited by the addition of avidin to a cell homogenate? For answer: a) draw a reaction that would be blocked by the addition of avidin to a cell homogenate; b) write a diagram of the carbohydrate metabolism in which this reaction takes place.arrow_forward5 Kinetic data was collected for a new enzyme and its substrate. The same data has been plotted in two ways, v vs. [S] and 1/v vs. 1/[S]. Use these plots to answer the following questions about its enzymatic properties. 6 v(micromole/sec) 4 1/v (sec/micromole) 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0 50 100 150 [S] (MM) 200 250 300 -0.3 -0.2-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1/[S] (1/mM) a. b. Determine Vmax and Kм for enzyme and its substrate. Don't forget to justify your work and include units! Vmax 5 umol/sec Km = 10 mM You duplicated the above experiment, but this time at a higher initial enzyme concentration. Draw on BOTH of the plots above what you expect the new data will look like at the higher enzyme concentration. Explain how this affects your Vmax and KM values, if at all. Vmax increases, Km stays the same as you increase enzyme concentrationarrow_forward
- Using my results in the table. What can you conclude about the effect of changing the environmental condition on enzyme activity? Explainarrow_forwardComplete Some enzymes require additional ...........................to catalyze reactions effectively. These could be small organic molecules or ........................... ions.arrow_forwardConsider the three-dimensional model of the tertiary structure of an enzyme below. Amino acids involved in binding are shaded blue, and amino acids involved in catalysis are shaded red.arrow_forward
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