Unit Quizzes 1, 2 & 3 health 320

A justification for the hazard analysis of critical control points is that:

Health hazards can be introduced at any point from harvest to consumption.

According to Healthy People 2010, the social environment includes:

Housing, transportation, urban development, Work-related stress, injury, and violence

Which of the following abbreviations is used to describe toxic effects of chemicals?

LD50

Minimata disease was associated with ingestion of seafood tainted with:

Mercury

The most deadly form of malaria is caused by:

P. falciparum

One of the founders of toxicology was:

Paracelsus

Which of the following outcomes is not usually associated with world population growth?

Prosperity

The environment plays a role in human health through associations with:

a. Accute conditions b. Alergic responses c. Disability d. Chronic diseases

The Texas Sharpshooter Effect illustrates:

. One cause of spurious or chance clustering

The estimated global burden of disease (percent) linked to environmental sources is:

25% - 33%

Which of the following statements about zoonotic diseases is most likely to be true?

An animal infected with a zoonotic agent may be free from symptoms.

In comparison with the general population, workers may receive exposures to toxic chemicals that are:

At higher concentrations for much longer time periods

Itai-itai disease was a form of poisoning associated with ingestion of:

Cadmium

Which of the following is an interpretation of the Delaney Clause

Carcinogenic chemicals are not permitted in food in any amounts.

The advantages of genetically modified foods do not include

Reduction in genetic diversity

Which of the following metals is not classified as a major toxic metal with multiple effects?

Silver

Which of the following is an example of a vector-borne disease?

The "black death"

Which of the following statements about heavy metals is true?

Their specific gravity exceeds that of water by five or more

Why do children in comparison with adults represent a group that is especially vulnerable to environmental hazards?

They spend more time indoors.

Sir Percival Pott, who wrote Chirurgical Observations Relative to...:

Was a London surgeon who identified an environmental cause of cancer

John Snow, in Snow on Cholera:

Was an English anesthesiologist who used natural experiments

Dose-response assessment refers to the question of:

What is the relationship between dose and occurrence of health effects in humans (or animals)?

Environmental health science is concerned with agent, host, and environmental factors in disease (the epidemiologic triangle). What statement below is true about the triangle?

a. Agent factors can include particles, toxic chemicals, and pesticides. b. The environment is the domain in which disease-causing agents may exist. c. The host is the person who affords lodgment of an infectious agent. d. Disease causality includes three major factors: agent, host, and environment.

The existence of a dose-response relationship may be used to establish the following kinds of information:

a. Causal association between a toxin and biological effects b. Minimum dosages needed to produce a biological effect c. Rate of accumulation of harmful effects

The contributions of epidemiology to environmental health include:

a. Concern with populations b. Use of observational data c. Methodology for study designs d. Descriptive and analytic studies

Methods for transmission of zoonotic pathogens include:

a. Contact with the skin b. Bite or scratch of an animal c. Direct inhalation d. Ingestion of contaminated foods

The purpose of metaphylaxis is to

a. Cure disease among an entire population of animals b. Prevent disease among an entire population of animals

Chemical hazards that may be present in food include

a. Marine toxins b. Heavy metals c. Monosodium Glutamate d. Mushroom toxins

Examples of disease vectors are:

a. Rats and mice b. Mosquitoes c. Ticks d. Sand Flies

The concentration and toxicity of a chemical in the body are affected by:

a. Route of entry into the body b. Received dose of the chemical c. Duration of exposure d. Individual sensitivity