PH 2110 Exam #2 (Topics 7-11)
Which of these is not a specific route of exposure: 1) Inhalation 2) Proximity 3) Ingestion 4) Dermal
Proximity
The impacts of climate change on food and agriculture include all of the following EXCEPT:
Reduced growth of most weeds, enhancing crop production
Which of the following statements about heat waves is true?
Risk factors for death during heat waves are well defined
Which one of the following statements depicts the dose-response relationship?
The dose-response quantitatively describes the association between exposure and effect of a toxic compound
The general acceptable environmental risk is 10 -6
True
Transport of contaminants and compounds in bodies of water is usually more complex than in the atmosphere.
True
Which of the following gases is most responsible for retaining heat in the atmosphere?
Water vapor
Which of the following is NOT one of the ways in which a toxic chemical is classified?
Whether it is a liquid of solid at room temperature
Global climate change contributes to each of the following EXCEPT:
Peak petroleum production
Which is a primary method of controlling exposures? 1) Substitution 2) Ventilation 3) Isolation 4) Personal protective equipment 5) All of these
All of these
Which is not an advantage of biomarkers over other exposure assessment methods? 1) Confirms actual absorption 2) Integrative over all routes of exposure 3) Accounts for bioavailability 4) Accounts for differences between people in metabolism
Accounts for difference between people in metabolism
Match the following definition to the correct term: "the increase in concentration of chemicals that occur in some, usually aquatic, food chains at higher trophic levels."
Biomagnification
Which of the following is NOT a significant greenhouse gas that contributes to global warming?
Carbon monoxide
Injection is one of the major routes for environmental agents to enter the human body.
False
Risk Characterization is the first step to conduct the risk assessment.
False
Risk is the same as hazard.
False
The most common route of toxicant exposure for adults is via the intravenous route
False
The unit of cancer slope factor is mg/kg-day
False
Climate change may contribute to water contamination through all of the following mechanisms EXCEPT:
Increased chlorine concentrations due to water treatment malfunctions
The subdivision of the atmosphere into troposphere, stratosphere, mesosphere, and thermosphere is based on the vertical variation of:
air temperature
Which of the following is NOT a typical measurement unit used to characterize PM (particulate matter)?
ppm
