CHICAGO CYANIDE MURDERS A CASE STUDY IN CELLULAR RESPIRATION ANSWERS

What additional information would you need to determine if they are connected? Both had taken Tylenol to help them cope with their loss shortly before collapsing; neither survived. In your opinion, are these seven deaths connected? In the days that followed, three more unexplained deaths occurred in nearby Chicago suburbs. Were the levels higher or lower than normal? At the end of the electron transport chain, cytochrome C passes the electron to Complex IV and then to its final acceptor, oxygen. Any opinions, findings and conclusions, or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation.

In fact, these membranes resemble the membrane that surrounds the cell. Students are asked to read through Part I and then spend minutes in small groups discussing whether they believe these cases are linked. While poison is the main suspect in the case, what are other ways a person could die of hypoxia? Even though the victims died of hypoxia, their level of oxygen in their blood was approximately mm Hg. It has a bilayer of phospholipids and embedded proteins. Are they substrates or products? What is their main function?

Have you ever thought about why oxygen is so important? Although this case was used in a small classroom, its format could easily anwsers adapted for use in a larger class setting. The passing of these electrons allows ATP adenosine triphosphate to be generated. The first was a year-old girl.

Part 2: Chicago Cyanide Murders- A Case Study in Cellular Respiration – Biology LibreTexts

Table of Antidotes Word Document, Cyanide acts very quickly, often killing within minutes of ingestion and authorities were slow to identify the cause of the deaths. The reason for the hypoxia is not always clear at the first examination.

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chicago cyanide murders a case study in cellular respiration answers

Cyanide acts very quickly, often killing within minutes of ingestion and authorities were slow to identify the cause of the deaths. Add this document to saved. Are there any abnormalities in the levels of these metabolites in the victims? Investigators found that all of the victims had taken an extra strength Tylenol hours before their deaths.

You might be surprised to learn that it directly interferes with cellular respiration that occurs in the mitochondria. The victims of the cyanide poisoning all had high levels of oxygen in their blood, but the poison was interfering with how the cells use that oxygen. Most students quickly recognize czse the oxygen levels in the blood do not correspond with hypoxia as the cause of respiratiob.

Cyanide inhibits cytochrome C, preventing the last protein from doing its job.

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Why or why not? At 7 am the next morning, her daughter was found collapsed on the bathroom floor, and later pronounced dead. In order to determine which component of cellular respiration is affected, students must understand where these metabolites are used or produced and what their functions are. In September of ,Mary Kellerman gave her 12 year old daughter a painkiller when she awoke during the night complaining of a sore throat.

Hypoxia means that the person suffered from a lack of oxygen, or they were suffocated.

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JCST – May/June 2014

For each metabolite listed in Table 1, describe its role in cellular respiration. The medical examiner concluded that each of the victims had died of hypoxia. In your opinion, are these seven deaths connected?

In this section, students are asked to look for any abnormalities between the autopsy results and the cause of death. What function of the cells was interrupted in these patients? Why is the mitochondrion important? It has a bilayer of phospholipids chicagl embedded proteins. This process is continuous in cells, with ATP constantly being generated and oxygen being used as the final electron acceptor. The victims of the cyanide poisoning all had high levels of oxygen in their blood, ztudy the poison was interfering with how the cells use that oxygen.

Cyanide is an extremely fast acting poison.

Chicago Cyanide Murders: A Case Study in Cellular Respiration

What is causing these people to die? On further investigation, it was shown that the tissues had major answsrs damage. The normal range is mm Hg.

chicago cyanide murders a case study in cellular respiration answers

On further investigation, it was shown that the tissues had studu mitochondrial damage. Recall your knowledge of the function of organelles. Students work in small groups of individuals to discuss answers to the case questions, followed by whole-class discussion.