Edexcel A2 Biology Unit 4

Some questions on the tougher topics

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  • Created by: Eleanor
  • Created on: 13-06-11 10:32
Non coding blocks in DNA are called
Introns
1 of 8
Coding regions of DNA are called
Exons
2 of 8
DNA primers are
Sequences of DNA complementary to DNA adjacent to the STR
3 of 8
At 55 degrees during cycle 1 of PCR primers attach at the start of the STR repeated sequence?
True
4 of 8
PCR is used to
Copy DNA
5 of 8
A virus reproduces firstly by
Attaching to a host cell
6 of 8
Virus replication continues in which order
Protien coats are made, virus inserts nucleic acid, viral DNA replicates, new virus particles are formed, virus particles are released.
7 of 8
B lymphocytes bind to antigens on the surface of
Bacterium
8 of 8

Other cards in this set

Card 2

Front

Coding regions of DNA are called

Back

Exons

Card 3

Front

DNA primers are

Back

Preview of the front of card 3

Card 4

Front

At 55 degrees during cycle 1 of PCR primers attach at the start of the STR repeated sequence?

Back

Preview of the front of card 4

Card 5

Front

PCR is used to

Back

Preview of the front of card 5
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Comments

Tovin

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Tough. 55%

sarah

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think i need a bit more revision on this!

Beth B

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Oh PCR, if you rear your ugly head on wednsday, I will cry XD

Infaas

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I am just starting A2, I was able to answer Qs 1 2 and 9 from AS knowledge, I didn't even try to answer the rest :D

Layla

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I think question 8 is wrong - shouldnt it be: insertys nucleic acid first and then replicates DNA?

Alice

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Yeah I agree with Layla, I don't see any other answer for question 8

Dilu

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thnku this helped me !

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