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A2 Biology > Forensics > Flashcards

Forensics Flashcards

1
Q

How quickly after death does decomposition begin?

A

4 mins

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2
Q

What is autolysis?

A

Self digestion - body is deprived of CO2 and O2, enzymes begin to digest cells and tissues

(Shown by fluid filled blisters)

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3
Q

What is putrefaction?

A

Destruction of soft tissues

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4
Q

What is saponification?

A

Fat converted into soap which forms under high pH conditions (adipocere formation)

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5
Q

What is mummification?

A

Dehydration/end result of tissues: skin converted into a thin leathery sheet that sticks to bone in dry conditions, low humidity

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6
Q

What are the four stages of human decomposition?

A

Fresh stage - autolysis
Bloat stage - putrefaction
Decay stage - saponification
Dry stage - diagenesis

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7
Q

What factors affect decomposition?

A

Temperature, level of moisture

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8
Q

What are the four main developmental stages of blowflies?

A

Egg, larvae, pupae, flies

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9
Q

What is entomologist?

A

Temperature,

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A2 Biology (3 decks)

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