CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8.4CR
How do both activation energy barriers and enzymes help maintain the structural and
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Cells use primarily two ways of storing potential energy: 1) as concentration gradients and 2) in molecules. A) Explain how energy can be stored in these two forms and how it can be used to do other work. B) Propose an analogy that can explain each of these forms of energy storage using everyday items.
ATP is :
A) produced in the mitochondria of cells
B) produced in the nucleus of cells
C) produced outside of the cells
D) produced only in response to exercise
1.
Shown below is a metabolic pathway:
Es
E
E4
E1
E2
A - B - C - D
E3
E6
Q- R – S
E7
Es
Suppose we have too much of "S" in the cell, please answer the following questions, with regards to feedback
inhibition:
a)
Which enzyme is most likely to be regulated?
b)
Which substance will act as the 'regulator'?
c)
Name the "site" where this 'regulator' will bind to the enzyme:
d)
Is this substance (from #b), a homotropic or heterotropic modulator?
Chapter 8 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 8.1 - Prob. 1CCCh. 8.1 - Describe the forms of energy found in an apple as...Ch. 8.1 - WHAT IF? If you place a teaspoon of sugar in the...Ch. 8.2 - Cellular respiration uses glucose and oxygen,...Ch. 8.2 - VISUAL SKILLS How would the processes of...Ch. 8.2 - Prob. 3CCCh. 8.3 - How does ATP typically transfer energy from an...Ch. 8.3 - Prob. 2CCCh. 8.3 - MAKE CONNECTIONS Does Figure 8.11a show passive...Ch. 8.4 - Many spontaneous reactions occur very slowly. Why...
Ch. 8.4 - Prob. 2CCCh. 8.4 - WHAT IF? Malonate is an inhibitor of the enzyme...Ch. 8.4 - Prob. 4CCCh. 8.5 - How do an activator and an inhibitor have...Ch. 8.5 - Prob. 2CCCh. 8 - Explain how the highly ordered structure of a cell...Ch. 8 - Explain the meaning of each component in the...Ch. 8 - Describe the ATP cycle: How is ATP used and...Ch. 8 - How do both activation energy barriers and enzymes...Ch. 8 - Prob. 8.5CRCh. 8 - Choose the pair of terms that correctly completes...Ch. 8 - Prob. 2TYUCh. 8 - Which of the following metabolic processes can...Ch. 8 - Prob. 4TYUCh. 8 - Some bacteria art metabolically active in hot...Ch. 8 - If an enzyme is added to a solution where its...Ch. 8 - Prob. 7TYUCh. 8 - EVOLUTION CONNECTION Some people argue that...Ch. 8 - Prob. 9TYUCh. 8 - WRITE ABOUT A THEME: ENERGY AND MATTER Life...Ch. 8 - Prob. 11TYU
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- Cells use two ways of storing potential energy: 1) as concetration gradients and 2) in molecules. A) Explain how energy can be stored in these two forms and how it can be used to do the work. B) Propose an analogy that can explain each these forms of energy storage using everyday items.arrow_forwardWould you describe metabolic pathways as inherently wasteful or inherently economical, and why?arrow_forwardWhich is NOT a characteristic of mitochondria? They: A) have two membranes. B) are the site of cellular aerobic respiration. C) have a true nucleus. D) contain their own DNA and ribosomes. E) the material inside their inner membrane (the cellular matrix) is their own cytoplasm.arrow_forward
- Can you name another molecule that provides cells with energy ?arrow_forwardWhat is the enzymatic activity of sodium-potassium ATPase (pump)? binds to and hydrolyzes ATP; binds to 3 Na+ in cytoplasm and releases outside cell; binds to 2 K+ outside cell and releases into cytoplasm binds to and hydrolyzes ATP; binds to 2 Na+ in cytoplasm and releases outside cell; binds to 3 K+ outside cell and releases into cytoplasm binds to and hydrolyzes GTP; binds to 3 Na+ in cytoplasm and releases into nucleus; binds to 2 K+ inside cell and releases into lysosome binds to and hydrolyzes 3 ATP; binds to 1 Na+ in cytoplasm and releases outside cell; binds to 1 K+ outside cell and releases into cytoplasmarrow_forward. A multicellular eukaryote cell typically has enough available ATP to meet its needs for about 90 seconds. What would cause an active cell to exhaust its ATP supply so quickly? A) regular rest is a cellular requirement. B) Photosynthesis used up all ATP. C) ATP is transported into other cells. D) Too much glucose takes over the cell, E) the cell runs out of or uses up the available O2arrow_forward
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