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Biology
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Describe the requirements, process and applications for Polymerase Chain Reaction (PCR)

Requirements·            Original DNA sample (to be amplified)·            dNTPS (4 DNA nucleotide bases)·            Thermal cycler (reaction vessel)·            Buffer solution (to maintain stable pH)· ...

VL
Answered by Verity L. Biology tutor
1159 Views

Explain how oxygen is loaded, transported and unloaded in red blood cells

Haemoglobin is a molecule in red blood cells with a high affinity for oxygen. It consists of 4 haem groups, each of which associate with one oxygen molecule at high pO2, typically in the lungs....

Answered by Biology tutor
12403 Views

What's the difference between allopatric and sympatric speciation? What are some evolutionary implications of this?

For speciation to occur, a population must split into at least two isolated parts to avoid the spread of genes between them; the nature of this isolation is what defines sympatry and allopatry. In allopat...

Answered by Biology tutor
4439 Views

How does temperature affect the rate of diffusion?

An increase in temperature increases the activation energy of the atoms or molecules and therefore increases their net movement across a partially permeable membrane, increasing the rate of diffusion. A d...

AM
Answered by Aoife M. Biology tutor
39725 Views

How does blood flow through the heart?

Firstly, deoxygenated blood enters the top right chamber of the heart called the right atrium. It flows through to the chamber below, called the right ventricle. It then gets pumped to the lungs through t...

TM
Answered by Tahimina M. Biology tutor
3336 Views

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