EN 410 University of Phoenix Week 6 Toxicology Worksheet

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ssignment ContentReview the self-paced tutorials on the ToxTutor website from the U.S. National Library of Medicine.
Complete the Toxicology Worksheet. Please remember to complete the first part, regarding course resources.
Submit your assignment.
ResourcesCenter for Writing ExcellenceReference and Citation GeneratorGrammar and Writing GuidesToxTutor

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ENV/410 v6
Toxicology Worksheet
Week 1
Resources
Identify the different resources available to aid your learning in this course.
Short-Answer Questions
1. How is toxicology defined?
2. How is environmental toxicology defined?
3. What is the difference between environmental toxicology and ecotoxicology?
4. What knowledge can be gained from dose-response relationships?
5. Why are the shape and slope of a dose-response curve important?
6. What role do shape and slope play in environmental toxicology?
7. What is LD50? Please explain.
8. What is LD10? Please explain.
Copyright 2019 by University of Phoenix. All rights reserved.
Toxicology Worksheet
ENV/410 v6
Page 2 of 2
Chart Analysis
Review the toxicology chart and answer the following questions:
9. Based on LD10, which toxicant is more potent? Why?
10. Based on LD50, which toxicant is more potent? Why?
11. At what dose do these toxicants have the same percentage lethality?
Toxicology Chart
Dose
mg/kg
Toxicant A
% lethality
Toxicant B
% lethality
0.01
20
25
0.05
25
30
0.1
30
35
0.5
40
40
1
45
50
5
55
65
10
60
70
50
70
85
100
75
95
500
95
105
1,000
100
107
5,000
105
108
10,000
107
109
Copyright 2019 by University of Phoenix. All rights reserved.

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substances

toxicology

chemicals

Ecotoxicology

environmental toxicity

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