Exam 19: Risk,toxicology,and Human Health

Who would be most affected by bioaccumulation of a hormone disrupter? 

An immediate allergic reaction to a bee sting would be a(n)_________________________ to a toxin.

What is one reason why risk assessment and risk-benefit analyses are useful? 

The risk associated with hang gliding is different than the risk associated with lightning because hang gliding is a(n)____________________ activity.

Cigarette smoking is an example of a preventable hazard.

Which of the following is a physical hazard? 

Which statement best describes dose-response curves? 

What percentage of global deaths are caused by infectious and parasitic diseases? 

Under the precautionary principle approach,chemicals are assumed to be safe until scientific research can determine otherwise.

Which system is responsible for the human body's defense against disease and harmful substances? 

How many years of delay is typical between initial exposure to a carcinogen and appearance of detectable symptoms? 

People who practice good hygiene have a much smaller chance of contracting infectious diseases such as flu and the common cold than people who do not.

Which class of chemicals causes birth defects? 

Which one of the following has been a low-cost investment that has saved millions of lives from diarrheal diseases annually? 

The _________________________ can be weakened by chemicals or radiation,which leaves the body open to attack from pathogens.

_________________________ can make the detection of a cancerous tumour difficult because they can travel to other parts of the body.

Which type of effect would be displayed by a person with kidney damage after an immediate exposure to a toxic chemical? 

How many deaths in Canada are attributed to tobacco? 

Why is biomagnification an environmental problem?

Chemical hazards are defined by their pervasiveness in the environment; the toxicity of the chemicals is not important.