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What is PCR?

PCR stands for Polymerase Chain Reaction. It is an experimental technique used to amplify a sample of DNA. It requires a number of things: a DNA sample, oligonucleotide primers for either side of the desi...

JH
Answered by Jamie H. Biology tutor
3272 Views

What happes in mitosis?

Steps: Use diagrams to draw each step1.Interphase (think 'I' is also a number 1 to start!)DNA has been copied (late G2 phase). Chromosomes are now existing as 2 pairs ca...

KH
Answered by Kirsty H. Biology tutor
2762 Views

Describe the structure of an antibody

Antibodies are made from 4 chains of peptides, two heavy chains and two light chains. There is also a constant region (Fc) and a variable region (Fab) which are used to bind to cells and antigens respecti...

JH
Answered by Jamie H. Biology tutor
3022 Views

Explain how electricity is conducted in a metal.

Metals have a giant metallic structure, with regular closely packed layers of positive ions in a 'sea' of delocalised electrons. What this means is that metals have a large number of positive ions, in a r...

ZK
Answered by Zeeshan K. Chemistry tutor
9715 Views

Using Act 1 Scene 2 of the Tempest, explore how Shakespeare uses language to characterise the relationship between Prospero and Caliban.

In their initial discussion of the character, Prospero admits to his daughter Miranda – and to an extent, to the audience - that Caliban “serves in offices that profit us” and therefore he and Miranda “ca...

OB
11431 Views

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