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WorksheetsUnderstanding DNA and Forensic Science
Total questions: 20
Worksheet time: 18mins
What is the name of the code inside cells that gives instructions for how living things grow and function?
Chromosome
DNA
Nucleus
Trait
What is a gene?
A bundle of DNA found in the nucleus
A small section of DNA that controls a trait
The part of the cell where DNA is stored
A lab method to separate DNA
Where in the cell is DNA stored?
Cytoplasm
Nucleus
Cell wall
Mitochondria
Which of the following is an example of a trait?
DNA
Chromosome
Eye color
Nucleus
What is forensic science used for?
Growing plants
Solving crimes or mysteries
Making food
Building houses
What is a DNA profile or DNA fingerprint?
A type of cell
A picture or pattern made from someone’s DNA
A bundle of chromosomes
A lab tool
What is gel electrophoresis used for?
Separating DNA pieces
Storing DNA
Collecting evidence
Growing bacteria
Which of the following could be a sample collected for DNA analysis?
Water
Bones
Plastic
Handwriting
If a scientist wants to find out who left hair at a crime scene, which process would they most likely use?
Gel electrophoresis to create a DNA fingerprint
Counting the number of chromosomes
Measuring the nucleus size
Looking at the cell wall
Why is DNA considered important in forensic science?
It helps build houses
It provides unique codes that can identify individuals
It is used to make food
It stores water
If a sample contains DNA, what can scientists learn from it?
The weather
The identity or traits of the person it came from
The age of the earth
The type of plant
A forensic scientist finds a blood sample at a crime scene. What steps should they take to identify the person it came from?
Look at the color of the blood
Extract DNA and create a DNA fingerprint using gel electrophoresis
Smell the blood
Count the number of cells
A crime scene has both hair and saliva samples. How could a scientist use these to help solve the case?
Throw them away
Analyze the DNA in both samples to see if they match the same person
Mix them together
Ask the victim which ones they recognize
If two people have different DNA fingerprints, what does this mean?
They are the same person
They are different individuals
They have the same traits
They are related
A detective has DNA profiles from a crime scene and from three suspects. How should the detective use this information to find the criminal?
Compare the DNA profile from the crime scene to each suspect’s DNA profile to find a match
Ask the suspects to confess
Mix the DNA profile from the crime scene with the suspects DNA profile to look for a reaction
Choose randomly
Based on these results whose blood was found in the blood stain at the crime scene?
Bob
Sue
John
Lisa
This laboratory procedure is known as
CLONING
gel electrophoresis
chromatography
use of a dichotomous key
