Chapter 8 APES

Which of the following on the map would serve best as a control

A

Which of the following best describes the action of an endocrine disruptor

An endocrine disruptor blocks the receptor protein binding site of a hormone so that the cell cannot recieve a signal

An individual is exposed to the water in the stream from which the sample shown in the graph was taken. If the individual was exposed to the highest dose of the bacteria, which of the following bacteria would have the lowest probability of causing illness if ingested.

C. jejuni

Based on the diagram which of the following is an expected consequence of runoff and sewage in an aquatic environment

Decreased lxygen production by seaweedon the floor from an increase in turbidyit

Which of the following not shown on the diagram are part of the tertiary treatment of wastewater

Disnfectants

Researchers suspect that sewage leaked into the Moose River. Rates for which of the following diseases should be used to determine whether the human population using the river as a source of drinking water was exposed to sewage

Dysentery

Which of the following examples includes both a point and a non point source of pollution

Fertilzer from surburban lawns and waste water from a treatment plant

Based on the diagram which of the following best describes how a malfunctioning air compressor would affect the process of sewage treatment

Fewer bacteria would be available to absorb dissolved organics in the tank

Which of the following is associated with the primary treatment of sewage

Grit chamber

Endocrine disruptors directly affect which of the following in an organism

Hormones

Mercury concentrations were measured in freshwater shrimp populations in two different ponds, one polluted with mercury and one unpolluted, with a similar food web in each pond. Which of the following best identifies the scientific question that would guide this investigation?

How much mercury accumulates in the tissues of freshwater sheimp living in a polluted pond

Consequence of runoff transporting chemicals that are endocrine disruptors to a pond

Increased frequency of birth defects in fish populations in the pond

Which of the following is a way to potentially eliminate one of the greatest threats to the worlds mangrove wetlands

Integrate ecologically sound shrimp aquacultural practices with mangrove management

Significant increases in water temperature can drastically change dissolved oxygen levels in a lake. Why does the combined effect of these two environmental changes result in algal blooms

Low dissolved pxygen leads to deatb for aerobic organims, lime fish, whose decomposition proviees an overwbudnace of nutrients for the algae, resulting in the large blooms

Which of the following is a point source pollutant that would likely affect the ecosystem health of a coral reef

Oil released from the broken hull of a shipwrecked tanker

Example of point source pollution

Oil tanker spill

A scientist is studying PCBs in tertiary consumers. She wants to determine if PCBs can be found in tertiary consumers even though these compounds were banned in the US in the 1970's. Which of the following best incentives a testable hypothesis for the study?

PCBs are persistent organic compoinds that are fat-soluable, so they should be found in the fatty tissues of tertiary consumers even though the compounds have been banned for decades

Which of the following solutions would best address the issues of greatest concern in the community

Planting mangrove forests

Which of the following practices would best help to protect agaisnt inland and coastal flooding in urban areas

Preserving wetland and coastal mangrove habitats

Which of the following factors would most likely contribute to the conditions observed in the Long Island Sound

Restricted circulation

Based on the diagram which of the following is the most likely reason that a community with good sanitation could still have individuals who contract cholera.

Runoff froma nearby agriculatual field pollutes a reservoir used for drinking water

If all four of the bacteria species shown in the graph are equally likely to contaminate agricultural products at a dose of , regulating which of the following species would have the greatest effect in reducing the likelihood of illness in humans?

Salmonella

Scientists are interested in determining if selenium, from a nearby mine, magnifies in the tissues of fish living in a lake. Which of the following best describes a testable hypothesis for the study?

Selenium will be at a higher concentration in fish tissue than in the tissue of fish prey.

Based on the diagram. Which of the following best describes why a population in an area that has poor sanitation can be particularly at risk for a cholera outbreak

The bacterium that causes cholera is spread throuhg ingestion of contaminated water or food

When water used to cool power plants during normal plant operations is released into adjacent waterways, which of the following is most likely to occur as a result

The disso,ved oxygen in the adjacent waterways would descrease bevause used collant water is warm and leads to thermal pollution

Which of the following explains what likely caused the death of so many bluegills in the lake

The influx pf warmer water caused an unexpected increase in the metabolic rate of the bluegills, which led to increased physiologicl stress from limited resource availability

Some drinking water standards allow bacteria in water at dosages up to the 10% probability of illness. Which of the following statements is best supported by the data in the graph?

The newly discovered bacterium would have the lowest allowable dosage to meet the drinking water standards

Based on the image which of the following conclusions can best be drawn to describe the conditions in the in the Long Island Sound

The sound has large numbers of phytoplankton blooms that are decomposing and consumed by respiring bacteria

Which of the following is most likely the reason that F Cholerae can spread rapidly through a population

V Cholrae is a microscopic bacterium that can survive in various aquatic environemnts for prolonged periods of time and can cause a delayed onset of visible symtpomns