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environmental scienc
Environmental diseases test 1-22-15
| Question | Answer |
|---|---|
| Miasma Theory of Disease | poisonous vapor or mist filled with particles from decomposed matter |
| What replaced the Miasma Theory of Disease | Germ Theory of Disease |
| Germ Theory of Disease | microorganisms that are too small to see without magnification |
| Why were bloodletting and water cure not affective? | they didn't address the actual cause of the disease |
| non-transmissible disease | not contagious; EX: cancer, heart disease |
| Example of a Large parasite | tapeworm |
| Example of fungi | athletes foot |
| Example of protozoa | malaria |
| Example of bacteria | food poisoning |
| Example of viruses | AIDS |
| Example of prion | mad cow disease |
| emergent disease | something that resurfaces or is completely new |
| Why is a completely new disease bad? | 1. you don't have a built up resistance 2. don't have medications |
| What was the problem with spraying of the DDT trying to control malaria? | it created a fog that was toxic to all people and animals |
| Why are bacteria able to evolve resistance more quickly than other organisms? | their small size and fast reproductivity |
| carcinogens | chemicals that cause cancer; EX: tobacco smoke |
| teratogens | chemicals that cause birth defects in an unborn fetas; EX: drinking |
| hormone mimics | have similar affects to hormones |
| hormone blockers | prevents natural hormones from attaching to their target organ |
| how is the plastic additive BPA classified? | endocrine disruptor |
| how are you exposed to BPA? | plastics |
| "Any synthetic or natural chemical has the potential to cause harm.... | ....if the level of exposure is high enough." |
| Which type of solubility is more likely to lead to the accumulation of a toxin in the body? Why? | oil soluble because they live in the fat stores in your body |
| What is an example of an acceptable risk with a high probability of exposure? Why is this risk acceptable? | Mercury in seafood; it is acceptable because while there is a high risk of exposure, the affects are not severe |
| Why would someone be biased to risk assessment? | 1. biased media 2. Misunderstandings 3. personal experience |
| What level of a food chain is most likely to bioaccumulate a persistent toxin? | top level, as substances pass up the food chain it accumulates at high, more toxic levels |
| If the number is higher, is it more or less lethal? | if the number is higher, it is less lethal |
| If the number is lower, is it more or less lethal? | if the number is lower, it is more lethal - it takes less to kill people |
Created by:
a.allsup
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