LD50 Values and Species Sensitivity

LD50 Values and Species Sensitivity

Assessment

Interactive Video

Chemistry, Biology, Science

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video introduces the concept of LD50, which is the lethal dose required to kill 50% of a population. It explains how LD50 varies between species using a chart comparing humans and rats for chemicals like carbon monoxide, nicotine, and table salt. The video highlights that humans are more tolerant to carbon monoxide but more sensitive to nicotine compared to rats. It concludes by emphasizing the importance of understanding LD50 and its variability across species.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does LD50 represent in toxicology?

The amount of a substance that is safe for 100% of a population

The amount of a substance that is safe for 50% of a population

The amount of a substance that is lethal to 50% of a population

The amount of a substance that is lethal to 100% of a population

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following substances has a higher LD50 value for humans compared to rats?

All of the above

Table salt

Nicotine

Carbon monoxide

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the LD50 value of carbon monoxide for humans?

1807 parts per million

12350 parts per million

5000 parts per million

4000 parts per million

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do humans have a higher tolerance to carbon monoxide than rats?

Humans have a smaller body size

Rats have a higher metabolism

Rats have a larger body size

Humans have a larger body size

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which species is more sensitive to nicotine?

Neither is sensitive

Humans

Rats

Both are equally sensitive

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which substance has a higher LD50 value for humans than for rats?

None of the above

Table salt

Nicotine

Carbon monoxide

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of LD50 values in different species?

They are the same for all species

They vary depending on the species

They are irrelevant for toxicology

They are only applicable to humans

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?