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Tapeworm infection is probably due to: - ✔✔echinococcus most outdoor air emissions are derived from - ✔✔transportation indoor air quality depends on - ✔✔sources of air pollution in the building, sources of pollution outside the building, and the exchange of air between the inside and outside the total amount of oxygen demand in a sample (in mg/L) as measured by a specific strong chemical oxidation procedure is called the: - ✔✔COD a black light is used by food inspectors to - ✔✔determine the presence of rodent urine sodium thiosulfate is added to water sample bottles to - ✔✔inactivate chlorine in water minimum separation distance are required and specified between the disposal field and: - ✔✔dwelling, property line, water course, and well (all of the above) NIOSH is the research arm of: - ✔✔OSHA the mandated public health activities listed in title 8 - chapter 52 on the NJ administrative code are known as: - ✔✔core activities the legal definition of air pollution in NJ states that is the presence of one or more air contaminants in the - ✔✔outdoor atmosphere
the venetians took important steps toward the control of communicable diseases when the introduced the practice of isolating ships that were under suspicion of carrying epidemic diseases. This practice is called - ✔✔quarintine the term commonly used when a pathogenic organism enters and multiplies in the blood of a susceptible host is: - ✔✔septicemia which of the following organisms produces an environmentally resistant spore? - ✔✔clostridium botulinum a type of resource recovery program currently approved by NJ that, via special permit, allows clams to be taken from marginally polluted waters and cleansed prior to release for market sale is - ✔✔depuration in taking a lab sample for water microbiology, you should: - ✔✔use a sterile container, take at least 100 ml for total coliform, keep the sample cold and have the sample analyzed within 30 hrs (all of the above) in collecting a water sample for volatile organic compounds, you need - ✔✔a 40 ml glass vial with septum seal and an acid preservative in choosing a laboratory, health departments must make sure - ✔✔they are NJDEPE certified for the test you want performed good public health management requires - ✔✔intelligence, organizational behavior, human resources, firm knowledge in health and epidedemiology. (all of the above) mixed construction/demolition material consisting of wood, metal, brick and concrete is considered a source separated recyclable and can be used as clean fill - ✔✔false which of the following characteristics may cause a chemical to be categorized as hazardous? - ✔✔flammable, toxic, corrosive, explosive (all of the above)
A small pond near a farm experienced an algae bloom. Which of the following was most likely the cause - ✔✔Fertilizer runoff causing an increase in nitrogen and phosphorus Why are animals used in laboratory testing of chemicals as opposed to humans? - ✔✔Test results using animals can be analyzed in a much shorter period of time than if humans were to be used. Which of the following is least likely to occur as a product of air pollution? - ✔✔gastrointestinal problems During lunch break, a group of construction workers noticed an unusually high amount of Rattus rattus running around. This is probably due to the fact that: - ✔✔There has been a recent demolition of several blighted two story houses How is the concentration of radon measured? - ✔✔PCi/L; picocuries / liter What is the most likely source of childhood lead poisoning? - ✔✔old painted windows What is the best source of protection against radioactivity? - ✔✔lead out of the following shellfish, which is the least likely to give someone hep A. Mussels, scallops, clams, or oysters. - ✔✔scallops Which of the following can cause transmission of Hepatitis B? - ✔✔needle sharing, blood transfusion, plasma transfusion, homosexual activity (all of the above) If a child tested for high lead after a finger stick test, what would be the next course of action? - ✔✔venous blood sample a child in elementary school has come down with lice. this is an: - ✔✔infestation placental transfer of immunity is an example of - ✔✔natural passive
A salmonella outbreak has occurred in which 520 people are infected. As a sanitarian assigned to the case you should: - ✔✔draw up correlations between the infective and non-infective control groups Which of the following is a causative agent of the genus plasmodium is the most dangerous (fatal) cause of malaria? - ✔✔falciparum Which of the following methods below would result in the least amount of garbage? - ✔✔recylcing Infections that occur in a person with AIDS are caused primarily by - ✔✔opportunistic infections Which of the following is required between a wading pool and a swimming pool? - ✔✔six feet deck of space When inspecting a public bathing place, which of the following are required? - ✔✔ring buoy, pool water log, emergency phone numbers and lifeguard on duty (all of the above) Which of the following is an example of simple asphyxiation? - ✔✔inert gas that displaces oxygen in the lungs Which of the following has the greatest penetrating power? - ✔✔gamma rays- electromagnetic Why would the fecal coliform count be perrefered to total coliform? - ✔✔it is an indicator of warm blooded animals A chemical reaction occurs when chlorine is added to water. The pH of the end product is 8. 00. Which of the following equations is the best representation of the reaction? - ✔✔HOCL-----> H+ OCL- which process is least likely to occur in a septic system - ✔✔removal of BOD
The formation of halo-organic in drinking water is most important because: - ✔✔The compound may be carcinogenic. The primary pollutant from a company burning fossil fuel is: - ✔✔CO A colorless, pungent odor released from fossil fuel plants is: - ✔✔SO The three chemicals of main concern as environmental pollutants are: - ✔✔ozone, acid gases and particulates The importance of using chemicals to treat trihalomethanes is because: - ✔✔it is carcinogenic Impulse noise is best defined as: - ✔✔A loud blast from a firecracker Which is not significant in minimizing hazardous exposure in the work place? - ✔✔.Circulate air so it wouldn't blow in the faces of the workers TOC can best be defined as: - ✔✔Total organic carbon TLV can be best defined as: - ✔✔Thres-hold limiting value Which type of soil would be present the most difficulty in the vertical flow of water in a septic system? - ✔✔clay In a floor plan for a retail food establishment, which of the following should be identified? - ✔✔refrigeration units, cleaning areas, dry storage, food preparation areas (all of the above) Which of the following is the best definition of incidence rate? - ✔✔The number of newly acquired cases of a disease
Which is not true of RBC in wastewater treatment? - ✔✔It is a completely anaerobic process Sterilization is: - ✔✔The complete removal of all life Which of the following would be considered safe? - ✔✔Water fountain with spout above the rim What is the major food associated with salmonella? - ✔✔poultry When should a load of dishes be put in through the washer in a retail food establishment? - ✔✔immediately after each use The process which kills all forms of microbial life: - ✔✔sterilization Which of the following is a biological treatment process? - ✔✔RBC: SECONDARY Synergism is best defined as: - ✔✔the total is greater than the sum of the parts an open dump is: - ✔✔an improper method of waste disposal title 24 deals with - ✔✔food and drugs Adulterated food is defined as: - ✔✔containing substances and poisons what is a good example of point source pollution - ✔✔underground storage tanks drinking water tests are performed and monitored by - ✔✔certified laboratories
Sources (causes) of indoor air pollution include: - ✔✔paint, oil, Tabaco products ( all the above) Which of following is true about environmental tobacco smoke ETS? - ✔✔There are no state regulatory levels for this pollutant true or false,NO 2 and SO 2 are Acidic aerosols they can enter the respiratory pathway - ✔✔true True or False : Asbestos a health risk because asbestos exist as microscopic respirable particles that remain airborne for long periods, Inhalation of Asbestos particles cause lung tissue scarring and is linked to cancer, Health issues with an Asbestos may not become a parent until the 15 th through 40 years after exposure. - ✔✔true true or false, carbon monoxide burns at about 250 times more effectively to a hemoglobin than oxygen and its deprivation will result in death. - ✔✔true what is colorless, oderless and hard to detect? - ✔✔carbon monoxide what is considered to be a serious indoor air pollutant? - ✔✔carbon monoxide why is the ozone stratosphere important? - ✔✔it shields the erth from harmful UV B radiation which of the following best defines organic waste - ✔✔it is carbon based and can be broken down biologically which if the following is NOT considered to be an inorganic waste - ✔✔salt, metal, gravel, sand (all of the above) which of the following is the best way to define oxygen depletion - ✔✔bacteria breakdowns are organic materials that help stabilize, fish and bacteria need O 2 to survive, reduction of dissolved oxygen in receiving stream due to biological decomposition of organic material, (all of the above)
which of the following is not a bacteria? - ✔✔polio true or false, polio and hepatitis are types of viruses - ✔✔true giardia and cryptosporidium are two types of protozoa true or false - ✔✔true which is the best definition of total solids - ✔✔refers to the matter suspended or dissolved in water or waste water populations that increase rapidly can be best described as - ✔✔exponential growth which of the following is the best definition of dissolved solids? - ✔✔solids in water that can pass through a filter what is the best definition for suspended solids? - ✔✔solids in water that can be trapped by a filter (settleable and non-settleable) which of the following is the best definition for colloidal solids - ✔✔solids that remain dispersed in a liquid for a long time due to their small size and electrical charge Which of the following is the best definition for Floatable Solids? - ✔✔Matter in wastewater which will not stay in suspension during a preselected settling period, such as One Hour, but floats to the top. ( Oil & Grease ) true or false, fresh wastewater is usually in color - ✔✔grey septic waster water will usually be in color - ✔✔black what is false about campylobacter jejuni is false? - ✔✔the food it is most commonly linked with is undercooked beef, especially hamburger
which of the following best defines a sanitary waste? - ✔✔carried from homes, commercial business and industrial facilities to wwtp which of the following best defines storm water? - ✔✔runoff from streets, land and building roofs and normally discharged to receiving stream untreated by separate pipe Which of the following best defines Combined Water? - ✔✔Sanitary and storm-water have sanitary portions may become overloaded during rain storms. T/F: Velocity Must be maintained at 2 ft/sec in gravity sewers (slope). - ✔✔true What of the following best defines Characteristics of Sewage? - ✔✔Oil/grease, solids content (industrial v. domestic) Which of the following best defines Detention Time? - ✔✔Amount of time spent in the pipe getting to WWTP (days or hrs.) Which of the following best defines Poor Construction? - ✔✔Inflow and infiltration, root intrusion T/F: Rotating Biological Contactor (RBC) is a treatment of units that consists of a shaft, "media" tank and a drive unit - ✔✔true T/F: Activated Sludge is a floc or solid formed by microbes. - ✔✔true What control measure is used to elevate the amount of food available per pound of mixed liquor suspended Solids? - ✔✔Food to Microorganism Ratio F:M
What is Mean Cell Resident Time? - ✔✔Average length of time a mixed liquor suspended solid particle remains in the activated process. is a combination of return activated sludge and wastewater (primary effluent) that flows into the aeration tank. - ✔✔Mixed liquor T/F: Mixed Liquor Suspended Solids (MLSS) The suspended solids concentration in the mixed liquor and common qualitative reference to the amount of microbes in the activated sludge process - ✔✔true Which of the following best defines Sludge Age? - ✔✔Process control measure that measures the length of time a particle of suspended solids has been undergoing aeration in the activated sludge process. Which of the following best defines Sludge Volume Index (SVI)? - ✔✔Process control test that evaluates the age/settling ability of the sludge Which of the following is the best definition for Waste Activated Sludge (WAS)? - ✔✔Refers to the solids being removed from the activated sludge. Which of the following best defines Organic Loading? - ✔✔Measures the amount of food available for microbes, Too much food overloads treatment system, results in poor treatment, Too little microbes will go dormant and/or die off (all of the above) All of the following statements are true about pH, expect. - ✔✔pH variability affects microbes. Optimal range is 6 .5 - 8. 5 / Acceptable at 6 .0 - 9. 0. Outside this range and the microbes will be affected. (all of the above are true) What is a tank? - ✔✔Also known as the aeration tank, and its designed to provide a suitable environment where microbes can grow, reproduce, and stabilize organics via suitable mixing and detention time. (A and B)
which isn't a certified lab test for water? - ✔✔trihalomethanes which of the following diseases is resistant to disinfection and is the targeted organism in pasteurization - ✔✔q fever organophosphates: - ✔✔inhibit cholinesterase permanently and are non-persistent (a and B) final rinse temperature at the manifold in a single tank dishwasher - ✔✔ 180 word commonly used to describe dissentary - ✔✔shigella space measuring in housing codes - ✔✔square feet per floor space instrument to measure suspended particles in the air - ✔✔high volume sampler which of the following causative agents of the genus plasmodium is the most dangerous cause of malaria
- ✔✔falciparum rabies is caused by: - ✔✔rhabdovirus a truck carrying molassses crashes and its contents are emptied into a lake. This causes a fish kill. What is the most likely reason for the death of the fish? - ✔✔decrease in the d.o due to increased BOD activity by bacteria rotavirus is most likely to affect - ✔✔young children and infants which of the following would be considered a non-cleanable surface? - ✔✔pitted pot psittacosis is associated with - ✔✔birds
an individual came down with a case of mumps and a single case of influenza. What is the difference in resistance? - ✔✔mumps exposure and resistance is lifelong while influenza resistance is not lifelong due to changing virus characteristics (different strains) hep A virus: - ✔✔can not multiply in food or water. It must multiply in the host. A rodent-borne disease or disease caused by an insect carried by a rodent - ✔✔epidemic typhus, endemic typhus or marine typhus most common rat in the usa - ✔✔Rattus nervegicus sylvatic plague is a disease from - ✔✔wild rodents True or false. The pneumonic plague is rodent borne - ✔✔false what disease is deadly and transmitted from mice - ✔✔hanta virus What kind of test is used to test for TB - ✔✔Sputum most bateria are which is an organism that grows best in moderate temperature, neither too hot nor too cold. - ✔✔mesophile What is the vector for rocky mountain spotted fever? - ✔✔American Dog Tick the vector for filariasis - ✔✔mosquito what is the function of a sand filter - ✔✔removes suspended particles
cause of paralytic shellfish poisoning - ✔✔dinoflagellates most probable number for shellfish waters to be acceptable - ✔✔ 70 total coliforms per 100 ml devises that remove or limit air pollutants from factories - ✔✔electrostatic precipitators and scrubbers which of the following has the greatest penetrating power? - ✔✔gamma rays why would fecal coliform count be preferred to total coliform count? - ✔✔indication of contamination, animal vs. human. which process is least likely to occur in a septic system? - ✔✔removal of BOD What does the term bulking refer to in sewage treatment - ✔✔flocculants in primary treatment contained sheathed bacteria and would not settle 12 ppg of a chemical is best represented as - ✔✔ 12 ug/l in the case of an overturned truck containing radioactive material, the best way of preventing injury is by: - ✔✔time, distance, shielding the reason for having air moving and ventilation in a manufacturing plant is to - ✔✔prevent buildup of vapors and gases a hunter shot and subsequently skinned rabbits without wearing gloves. He then experienced ulcers on his skin and lymph node swelling. He probably has contracted: - ✔✔tularemia which of the following diseases, caused by a mite, has frequently been confused with chicken pox? - ✔✔rickettsial pox
organisms which grow at low temperatures are - ✔✔psychrophilic keeping hot foods hot and cold foods cold regers to these temps - ✔✔< 41 and > 135 which of the following is not true regarding q fever - ✔✔it is never transmitted person to person flocculation is best defined as - ✔✔binding particles together, bacteriastatic halo organics are - ✔✔organic compounds that have Br- and Cl- in their structure the formation of halo-organics in drinking water is most important because - ✔✔the compound may be carcinogenic What is the purpose of herd immunity - ✔✔vaccination of a certain percentage of the population to give immunity to the whole population what is the significance of a percolation test - ✔✔proper location and design of a septic system mottling is best described as - ✔✔effect of water on soil particles an example of point-source pollution is - ✔✔underground storage tanks another name for opthalmia neonatorium is - ✔✔gonococcal conjuctivits useful gas by-product in sewage treatment is generated in which of the following processes? - ✔✔anaerobic digestion- methane gas
