PLTW Biomedical Science Unit 1
Review Questions and Answers 100%
Pass
What can be done at a scene of a mysterious death to help reconstruct what happened?
- ✔✔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? - ✔✔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.
Brittie Donald, All Rights Reserved © 2025 1
, How do scientists design experiments to find the most accurate answer to the question
they are asking? - ✔✔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? - ✔✔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? -
✔✔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.
Know how to use the Glaister's equation. - ✔✔98.4- recorded temp/1.5= Hours since
death
What is DNA? - ✔✔A double-stranded, helical nucleic acid molecule capable of
replicating and determining the inherited structure of a cell's proteins.
Brittie Donald, All Rights Reserved © 2025 2
Review Questions and Answers 100%
Pass
What can be done at a scene of a mysterious death to help reconstruct what happened?
- ✔✔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? - ✔✔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.
Brittie Donald, All Rights Reserved © 2025 1
, How do scientists design experiments to find the most accurate answer to the question
they are asking? - ✔✔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? - ✔✔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? -
✔✔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.
Know how to use the Glaister's equation. - ✔✔98.4- recorded temp/1.5= Hours since
death
What is DNA? - ✔✔A double-stranded, helical nucleic acid molecule capable of
replicating and determining the inherited structure of a cell's proteins.
Brittie Donald, All Rights Reserved © 2025 2
