Review the following chart and answer the following questions: Based on LD 50 ,
ID: 268005 • Letter: R
Question
Review the following chart and answer the following questions:
Based on LD50, which toxicant is more potent? Why?
Toxicology Chart
Dose
Toxicant A
Toxicant B
mg/kg
% lethality
% 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
I do not understand if LD50 is the same as 50% lethality
Dose
Toxicant A
Toxicant B
mg/kg
% lethality
% 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
Explanation / Answer
ANSWER: Toxicant B is more potent
LD50 is the lethal dose which kills 50% of the population. Hence, the toxicant which causes 50% lethality in the population at a lower dose is more potent. Therefore 1 mg/kg of toxicant B which causes 50% lethality is more potent than the Toxicant A whose 1 mg/kg causes only 45% lethality in the population.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.