Poison Part-ay

Snacks and worksheet fill in about famous poisonings.
Presentations

Homework:
None

Substitute

In Memoriam, a DVD on 9/11

Homework:
Work on famous person, due tomorrow.

Test for Pb

Lab! Which family members are positive for lead??

Homework:
Poisoning Part-ay
DUE: Next Tuesday 9/30/08
Choose a famous person associated with poison (victim or perpetrator).
Examples: Socrates, Hitler, Lucretia Borgia
You will need to be able to share the following with the class:
1) Why your person is famous.

2) The type of poison they used.

3) How that poison affects the body.
a. How was the poison administered?
b. What body system shows the greatest damage?

4) How were forensic science methods used in their discovery, arrest or conviction?
In addition to your presentation, you must turn in a typed response to the above questions. If you do not submit the typed response you cannot go to the party.
The typed response:
• Minimum of one page (single or double spaced)
• One photograph of your person
• Standard format (12 font and 1” margins or less)

Poisoning continued.....

???? Do we need crime ?????

Poisoning

Test for Lead-PreLab

Homework:
Investigate your famous person and be ready to share next
Tuesday at the Poisoning Part-ay!

Poisonous Gases

Examples of Poisons and Toxins

Poisonous Gases

Dachau

Homework:
Using your biology textbook sketch and label the respiratory system in your lab notebook.

Poisons/Toxins

Today we defined poisons and toxins!

For homework:
List 3 poisons and 3 toxins (don't forget to name your source).

Poison V.S. Toxins

Quizzes were returned.
Introduction to poisons
Effects of Smog video
Is smog a poison?


Homework:
Define Poison
Define Toxin

QUIZ

Thanks everyone for being so helpful and well mannered with the sub. I really appreciate it.

Analysis of Lab Results

Osmosis
Path of blood
Analysis questions
Quiz information

Homework:
Cheat sheet (PostIt) for quiz

Gettler Chloride Test

Gettler Chloride Test
Human Heart!!!!

Homework:
Quiz Friday create a cheat sheet (you may only use the PostIt I gave out and nothing else)

The quiz will cover the following:
Intro to Forensics
Processing a Crime Scence

Drowning

CDC Definition
CDC data about incidents of "dry drowning." CDC supports international consensus defining drowning as "the process of experiencing respiratory impairment from submersion/immersion in liquid" and does not distinguish between "wet" and "dry" drowning.
World Health Organization Definition
Drowning is defined as death by suffocation due to being immersed in water. There are two classifications of drowning: wet and dry. In wet drowning, the person has inhaled water which interferes with respiration and causes the circulatory system to collapse. In the less common instance of dry drowning, the airway closes up due to spasms caused by the presence of water. Near drowning may result in neurological damage and successful recovery depends on prompt rescue and resuscitation.
How big is the problem?
The following information was gathered from CDC:
In 2005, there were 3,582 fatal unintentional drownings in the United States, averaging ten deaths per day. An additional 710 people died, from drowning and other causes, in boating-related incidents.

Cont…..
More than one in four fatal drowning victims are children 14 and younger.1 For every child who dies from drowning, another four received emergency department care for nonfatal submersion injuries.
Nonfatal drownings can cause brain damage that may result in long-term disabilities including memory problems, learning disabilities, and permanent loss of basic functioning (i.e., permanent vegetative state).
What situations commonly lead to a near drowning?
* Near drownings are very common accidents.
* Children can drown in just a couple inches of water.
* A child can drown in seconds.
* A drowning can happen anytime a child is left alone around water.
* A drowning can happen in a bathtub, child bathing seat, or sink.
* A drowning can happen in a bucket or toilet.
* A drowning can happen in a pool, hot tub, lake, river, ocean, etc.
* A drowning can happen while boating or fishing.
* Drownings that involve alcohol are common.
* A drowning can happen after falling through ice.
What is happening?
While you struggle to breathe, you force water into your sinuses. Coughing triggers an inhalation reflex, which pulls more water in to the lungs. The loss of air supply leads to unconsciousness. The heart stops shortly after. Any amount of water in your airway can cause a laryngospasm. Once that has occurred the airway can seal and lead to cardiac arrest because of oxygen deprivation. Some call this a “dry” drowning.
Fresh V.S. Salt
No difference in the mechanism of drowning. There are clues concerning whether the person drowned in fresh water or salt water.
Gettler Chloride Test: See handouts

Sources
http://www.cdc.gov/print.do?url=http%3A//www.cdc.gov/ncipc/factsheets/drown.htm

For the Gettler Chloride Test you must be familiar with the circulatory system.
You must know the path of blood and be able to draw it!
1. superior vena cava, inferior vena cava (from body)
2. right atrium (valve)
3. right ventricle (valve)
4. pulmonary artery (to lung)
5. lung and capillaries of lung
6. pulmonary vein (from lung)
7. left atrium (valve)
8. left ventricle (valve)
9. Aorta (to body)
capillaries of the body

Homework:
Quiz Thursday

Cells

Finish Cell Drawing
Why is mtDNA more useful in identifying remains than nuclear DNA?
The other approach analyzes mitochondrial DNA, or mtDNA. Because mtDNA tends to survive long after nuclear DNA has disintegrated, this approach is useful in identifying the remains of persons who died long ago. It was used, for example, to identify the two crew members of Bomber 31 who have been identified and, more famously, to help identify Czar Nicholas II of Russia, who was killed along with his immediate family in 1918. This is also the technique scholars have turned to in order to assess how closely related extinct Neanderthals are to people today*. Also, there are more copies of mtDNA than nuclear DNA (200-2,000 mitochondria v.s. 1 nucleus). http://www.pbs.org/wgbh/nova/bomber/mtdna.html

During Drowning, wet or dry, what is happening to the cells in your body? Answer in your lab notebook.
(Hint: Where does the oxygen go?)

Notebook Check
CS Sketch Quiz Rubric

Homework: DUE 9/16
Is drowning in fresh water the same as drowning in salt water? For example, someone in a bathtub verses a surfer in the ocean. Explain your answer.

Cell Notes~mtDNA~9/11

Part 1:
Three pages of notes about eukaryotic cells with a quick quiz at the end!
Quiz:
A. Name three structures that plant cells have that but animal cells don't.
B. Which cell organelle......
Houses the DNA
Creates proteins
Transports proteins
Packages proteins for export
Makes energy for the cell
Regulates what goes into and out of the cell

Part II
pg. 262 in Forensic Biology
What is mitocondrial DNA and where is it found?
What is nuclear DNA and where is it found?
Draw and label the cell on pg. 262 you can also use the Biology Text pg. 175

*Why is mtDNA more useful in identification of remains than nuclear DNA?

Notebook Check Monday

9/11

9/11 Ethics Debate

1. Should we continue our war on terrorism i.e., Iraq, Afghanistan, and Pakistan?

2. Should we refuse individuals who are non-US citizens the right to enroll in science, engineering, flight school, and transportation courses in the USA?

3. How can we improve our campus from terrorist attack?

4. You are in command of a flight of F-16 fighter planes heading towards a hijacked commercial airline. Knowing that a hijacked plane has just slammed into the golden gate bridge and you have located on your radar screen a second hijacked plane. What is the best way to deal with the issue?

5a) Should we rebuild where the world’s trade center once was b) how do we safeguard our countries world’s tallest building/monuments in the various major cities?

Crime Scenes

Quiz- sketching objects using fixed points- TURN in notebooks at the end of the period!
Chapter 3 questions #'s 1-4, 8,9,10 (you can expect these on the next quiz, or ones like them)

Chapter 3 Notes

Steps in processing a crime scene.
Determine the packaging used for different types of evidence.
What is the chain of custody and why bother?

How to Process a Crime Scene

Skits! Great Job. Humorous TOO.

Forensic Friday

Eye Witness Testimony Activity
More on lateral thinking
Correct crime scene sketches for final grade

A thought for the weekend......
The music stopped. A girl died. Why?

Sketching Crime Scenes

Lateral thinking activity.
Finished crime scene sketches and turned in.

Donations

The donations are non-mandatory. However, if you are able to donate to the science department all faculty members would be grateful and your donations will be well utilized. Thank you for considering helping your school science program. Mrs. Marshall

Sketching a Crime Scene

Sketches and photography work together, with the sketches giving perspective to the photographs. The sketches give measurements, scale and relative placement of all important details in the crime scene. An original sketch is considered evidence and must never be changed or tampered with.
Today in class we went over fixed points and how to measure objects from these fixed points.

Intro to Forensics

1. Cornell Style Notes
2. Group time to finish up video notes on CIS: Lab Rats.