Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 2, Problem 2VCQ
Figure 2.7 An atom may give, take, or share electrons with another atom to achieve a full valence shell, the most stable electron configuration. Looking at this figure, how many electrons do elements in group 1 need to lose in order to achieve a stable electron configuration? How many electrons do elements in groups 14 and 17 need to gain to achieve a stable configuration?
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a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.
b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
If you wanted to reduce the difference between peak and trough levels that occur with repeated administration of a drug, how would you adjust the dose and dose interval without changing the plateau concentration (plateau is the average of peak and trough levels)? Select your answers for both dose and interval. Hint: It may be helpful to think about this problem using an example such as food. How would you eat if you wanted to maintain very steady hunger/satiety levels without changing your total caloric intake?
Options:
A. Dose; Increase dose
B. Dose; Decrease dose
C. Dose; Do not change dose
D. Interval; Increase the interval between doses (give the drug less frequently)
E. Interval; Decrease the interval between doses (give the drug more frequently)
F. Interval; Do not change the interval
What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. Show the math
Chapter 2 Solutions
Biology 2e
Ch. 2 - Figure 2.3 How many neutrons do carbon-12 and...Ch. 2 - Figure 2.7 An atom may give, take, or share...Ch. 2 - Figure 2.24 Which of the following statements is...Ch. 2 - If xenon has an atomic number of 54 and a mass...Ch. 2 - Atoms that vary in the number of neutrons found in...Ch. 2 - Potassium has an atomic number of 19. What is its...Ch. 2 - Which type of bond represents a weak chemical...Ch. 2 - Which of the following statements is not true?...Ch. 2 - When acids are added to a solution, the pH should...Ch. 2 - We call a molecule that binds up excess hydrogen...
Ch. 2 - Which of the following statements is true? Acids...Ch. 2 - Each carbon molecule can bond with as many as...Ch. 2 - Which of the following is not a functional group...Ch. 2 - What makes ionic bonds different from covalent...Ch. 2 - Why are hydrogen bonds and van der Waals...Ch. 2 - Discuss how buffers help prevent drastic swings in...Ch. 2 - Why can some insects walk on water?Ch. 2 - What property of carbon makes it essential for...Ch. 2 - Compare and contrast saturated and unsaturated...
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