Edexcel Biology Topic 6 Quiz
- Created by: Daisy Ward
- Created on: 26-04-13 20:27
Other questions in this quiz
2. If a body is immersed in water it will cool more rapidly, why is this?
- Water is a better conductor of heat than air.
- Water is a worse conductor of heat than air.
- Water is normally at a low temperature therefore it is quicker for a body to reach the ambient temperature of water.
3. Why is the enzyme DNA Polymerase used in PCR?
- It is the only enzyme which will join to a DNA primer, which is essential for 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.
- Because it is an enzyme that works quickly.
4. 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.
- 55 degrees celsius.
- 70 degrees celsius.
5. 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.
- Phosphophorylated.
- Hydrogenated.
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