Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 5TYU
Some bacteria are
- A. they are able to maintain a lower internal temperature.
- B. high temperatures make catalysis unnecessary.
- C. their enzymes have high optimal temperatures.
- D. their enzymes are completely insensitive to temperature.
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Students have asked these similar questions
When an enzymatic reaction is in progress, do you expect to see happen to the amount of product?
A
It will increase as the reaction proceeds.
B
It will decrease as the reaction proceeds.
C
The amount will not change as reaction proceeds.
D
It is not possible to predict what will happen to it as the reaction proceeds.
Which of the following statements is false? Enzymesa) bind to substrates.b) lower the energy of activation.c) convert coenzymes to products.d) speed up biochemical reactions.e) can be named after the kinds of reaction they catalyze.
Which of the following statement regarding enzymes is false?
a.) they speed up reaction rates
b.) they work within narrow temperature and pH ranges
c.) The active site binds the substarate
d.) They are consumed in the reactions they catalyze
Chapter 6 Solutions
Campbell Biology in Focus
Ch. 6.1 - MAKE CONNECTIONS How does the second law of...Ch. 6.1 - Describe the forms of energy found in an apple as...Ch. 6.2 - Cellular respiration uses glucose and oxygen,...Ch. 6.2 - Prob. 2CCCh. 6.2 - Prob. 3CCCh. 6.3 - How does ATP typically transfer energy from...Ch. 6.3 - Prob. 2CCCh. 6.3 - MAKE CONNECTIONS Does Figure 6.10a show passive or...Ch. 6.4 - Many spontaneous reactions occur very slowly. Why...Ch. 6.4 - Why do enzymes act only on very specific...
Ch. 6.4 - WHAT IF? Malonate is an inhibitor of the enzyme...Ch. 6.4 - A mature lysosome has an internal pH of around...Ch. 6.5 - How do an activator and an inhibitor have...Ch. 6.5 - Prob. 2CCCh. 6 - Choose the pair of terms that correctly completes...Ch. 6 - Prob. 2TYUCh. 6 - Which of the following metabolic processes can...Ch. 6 - If an enzyme in solution is saturated with...Ch. 6 - Some bacteria are metabolically active in hot...Ch. 6 - If an enzyme is added to a solution where its...Ch. 6 - DRAW IT Using a series of arrows, draw the...Ch. 6 - Prob. 8TYUCh. 6 - SCIENCE, TECHNOLOGY, AND SOCIETY Organophosphates...Ch. 6 - FOCUS ON EVOLUTION A recent revival of the...Ch. 6 - FOCUS ON ENERGY AND MATTER Life requires energy....Ch. 6 - SYNTHESIZE YOUR KNOWLEDGE Explain what is...
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- Which of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.arrow_forwardHow could you use the diversity of metabolic pathways that produce the same or similar products to critique this argument? Rank the steps from first to last. a. New enzymes cause modification of the pathway in an advantageous way. b. The biochemical pathway is gradually modified. c. A pathway exists and accomplishes some functions. d. An organism with cellular enzymes has mutations that allow new enzymes to arise.arrow_forwardSubstance A is converted to substance B in a metabolic reaction. Which statement best describes the role of enzyme during this reaction? A. It dissolves substance A in the reaction medium. B. It speeds up the reaction without it being consumed in the process. C. It provides energy to the reaction system D. It adjusts the pH of the reaction medium.arrow_forward
- Which of the following is not true about enzymes: a. They increase ΔG of reactions. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.arrow_forwardIn a highly high-temperature environment, you placed an enzyme and some substrates. You've seen that there hasn't been any reaction. Applying what you have learned on enzyme activity, how would you explain what occurred? A. The enzyme was not placed at a pH level that would allow it to react at its maximum rate. B. There are not enough enzymes for the reaction to occur. C. The enzyme may have denatured or broken down due to the high temperature of the environment, resulting in no reaction. D. There are not enough substrates for reaction to occur. Substrate concentration affects enzyme activity. Determine what would occur when there are too many substrates and fewer enzymes? A. No enzyme activity would occur. B. The reaction rate would continuously increase. C. The reaction would speed up tremendously. D. Maximal rate of reaction would occur. Enzyme activity mainly involves the active site and the substrate. How would you compare the active site from the substrate? A. The substrate…arrow_forwardAll of the following increase enzymatic activity except a. an increase in temperature. b. an increase in pH. c. an increase in concentration of the substrate. d. an increase in concentration of the enzyme that catalyzes the reaction.arrow_forward
- What is it called when the final product of an enzymatic pathway acts as a modulator for the first enzyme in the pathway? a. isoenzyme activation b. relative specificity c. feed back inhibition d. competitive inhibitionarrow_forwardproteins function to give structure to the body, regulate processes, provide protection, help muscles to contract,transport substances and serve as enzymes. As enzymes,proteins serves to: a.Lower the activation energy of biochemical reactions b.speed up biochemical reactions c.orient colliding molecules d.all of the above e.only two of the abovearrow_forwardWhat is the difference between cellular respiration and fermentation? Select an answer. a) cellular respiration does not need oxygen, while fermentation needs oxygen b) cellular respiration needs oxygen, while fermentation does not need oxygen c) cellular respiration produces very little energy, while fermentation produces a lot of energy d) Almost all cells carry out fermentation, while few carry out cellular respirationarrow_forward
- Enzymes catalyze a chemical reaction by A. decreasing the amount of ATP required to activate a reaction B. increasing the amount of ATP required to activate a reaction C. slowing down the reaction to obtain more products D. increasing the reaction to obtain more products E. decreasing the amount of ATP required and obtaining more products.arrow_forwardIf an organism tests positive for catalase, which of the following is MOST likely true about the organism? A. It returns nitrogen back to the atmosphere B. It can break down plasma membranes C. It creates H2O as a product of respiration D. It can only do homolactic fermentationarrow_forwardWhat is the reason why the transition state of a catalyzed reaction is lower has lower energy compared to an uncatalyzed reaction? A. because enzymes only work at low temperatures B. because of favorable interactions with the substrate C. because of enthalpic interactions between the enzyme and the transition state D. A and Barrow_forward
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