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