Edexcel Biology Topic 6 Quiz

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At what temperature is DNA heated in PCR so that the hydrogen bonds break and the DNA is seperated into two strands?
95 degrees celsius.
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Why is the enzyme DNA Polymerase used in PCR?
Because it is able to withstand the temperature that is needed to break the hydrogen bonds to separate the DNA strands when PCR is repeated.
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In Southern Blotting, a DNA probe binds to a complementary target DNA sequence to make this target sequence visible, when the complementary probe joins to the target DNA sequence it is said to have what?
Hybridised.
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When someone dies, their core body temperature starts to fall until it reaches what temperature?
Ambient temperature.
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In determining time of death, a thermometer would be used to determine body temperature, this thermometer would take this from where?
The abdominal stab.
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There is a time period when using body temperature to predict time of death can be used, what is this time period?
24 hours.
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If a body is immersed in water it will cool more rapidly, why is this?
Water is a better conductor of heat than air.
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Other cards in this set

Card 2

Front

Why is the enzyme DNA Polymerase used in PCR?

Back

Because it is able to withstand the temperature that is needed to break the hydrogen bonds to separate the DNA strands when PCR is repeated.

Card 3

Front

In Southern Blotting, a DNA probe binds to a complementary target DNA sequence to make this target sequence visible, when the complementary probe joins to the target DNA sequence it is said to have what?

Back

Preview of the front of card 3

Card 4

Front

When someone dies, their core body temperature starts to fall until it reaches what temperature?

Back

Preview of the front of card 4

Card 5

Front

In determining time of death, a thermometer would be used to determine body temperature, this thermometer would take this from where?

Back

Preview of the front of card 5
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