PLTW Biomedical Science Unit 1 Review
Questions and Answers
What can be done at a scene of a mysterious death to help reconstruct what
happened? - Correct Answers -Protect the crime scene.
Photograph the scene with rulers for size estimation.
Examine the crime scene for all evidence in an orderly fashion.
Collect and document all physical evidence.
Interview witnesses, possible suspects, and known associates.
How do the clues found at a scene of a mysterious death help investigators determine
what might have occurred and help identify or exonerate potential suspects? - Correct
Answers -Clues help because investigators can analyze them and see a certain pattern
or way in which the death happened based on the clues display. They also can be
tested for DNA and can determine or exonerate suspects. They can usually get a
general idea about what happened and who may have been involved based on all the
clues.
How do scientists design experiments to find the most accurate answer to the question
they are asking? - Correct Answers -Scientists use scientific methods to design
experiments. They first identify the question, research, hypothesis, experiment, analyze,
conclusion, and summary. The scientific method helps them find the answer to their
testable question. This is probably the most accurate way they can answer their
questions.
What is the difference between a dependent and an independent variable? - Correct
Answers -The dependent variable relies on the output of the independent variable.
The Independent variable acts independently of its environment; Doesn't rely on any
other factors.
How are bloodstain patterns left at a crime scene used to help investigators? - Correct
Answers -Bloodstain patterns are very helpful in determining what happened leading up
to death> Smudges, smears, splatters, and sprays all point to different events, which is
the same for every bloodstain. They then analyze the blood and come up with possible
theories.
Lymphatic System - Correct Answers -made up of the lymphatic vessels, which travel
with your blood vessels, and the lymph nodes, Picks up fluid leaked from blood vessels
Questions and Answers
What can be done at a scene of a mysterious death to help reconstruct what
happened? - Correct Answers -Protect the crime scene.
Photograph the scene with rulers for size estimation.
Examine the crime scene for all evidence in an orderly fashion.
Collect and document all physical evidence.
Interview witnesses, possible suspects, and known associates.
How do the clues found at a scene of a mysterious death help investigators determine
what might have occurred and help identify or exonerate potential suspects? - Correct
Answers -Clues help because investigators can analyze them and see a certain pattern
or way in which the death happened based on the clues display. They also can be
tested for DNA and can determine or exonerate suspects. They can usually get a
general idea about what happened and who may have been involved based on all the
clues.
How do scientists design experiments to find the most accurate answer to the question
they are asking? - Correct Answers -Scientists use scientific methods to design
experiments. They first identify the question, research, hypothesis, experiment, analyze,
conclusion, and summary. The scientific method helps them find the answer to their
testable question. This is probably the most accurate way they can answer their
questions.
What is the difference between a dependent and an independent variable? - Correct
Answers -The dependent variable relies on the output of the independent variable.
The Independent variable acts independently of its environment; Doesn't rely on any
other factors.
How are bloodstain patterns left at a crime scene used to help investigators? - Correct
Answers -Bloodstain patterns are very helpful in determining what happened leading up
to death> Smudges, smears, splatters, and sprays all point to different events, which is
the same for every bloodstain. They then analyze the blood and come up with possible
theories.
Lymphatic System - Correct Answers -made up of the lymphatic vessels, which travel
with your blood vessels, and the lymph nodes, Picks up fluid leaked from blood vessels
