Toxicology

Question 1

What is Toxicology?

Answer 1

The study of toxins. They can either be synthetic or naturally occurring

Question 2

Acute response

Answer 2

Immediate response to a single, high level of exposure.

Example: electric shock. You burn your hand when you touch fire

Question 3

Chronic

Answer 3

Over time, slower, gradual, accumulating, long lasting effect from either a single exposure or repeated low level exposures

Question 4

What factors determine exposure?

Answer 4

Solubility- is something dissolvable in oil or water?

For example, things that are solvable in oil persist for a long period of time. This is known as bioaccumulation

Levels will be biomagnified at higher food chain levels

Question 5

Dosage

Answer 5

How much of something you are given. Danger in many occasions doesn’t come from just any exposure, we have to play attention to at what levels makes soemtjing dangerous

Question 6

Bioaccumulate

Answer 6

The gradual accumulation of substances ( chemicals) in an organism. build up of chemicals

Question 7

Biomagnification

Answer 7

the increase in concentration of chemicals in each organism up the food chain. Higher in the food chain = more chemicals

Question 8

Rate of degradation

Answer 8

How long it takes for chemicals to break down

Question 9

POPs- Persistent Organic Pollutants

Answer 9

Organic chemicals that degrade very slowly and therefore accumulate over time. They degrade slower than they accumulate

Ex: Perchlorate, Atrazine

Question 10

Perchlorate

Answer 10

Waterborne contaminant from rocket fuel. Effects irrigation water and ultimately makes its way into breast milk

Question 11

Atrazine

Answer 11

Most widely used herbicide in America that is an endocrine disruptor (HHA)