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Biology
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How does the polymerase chain reaction (PCR) work?

PCR is a method to isolate and amplify a specific fragment of DNA that you would like to study. The reaction is set up with template DNA, primers, DNA polymerase enzyme and free nucleotides. Primers are s...

SA
Answered by Sunya A. Biology tutor
3500 Views

How is the structure of the lung adapted for respiratory function?

The lung can be divided into different sections regarding its function. The tube that connects the airway to the lungs is called the trachea, which is made of cartilage rings. These are flexible, and allo...

RI
Answered by Rebecca I. Biology tutor
18611 Views

Explain the processes involved in eutrophication

Eutrophication is where a surplus of nutrients in a lake or pond leads to an overgrowth of plant life, causing a shift in the biodiversity. There are 5 steps to this process:

...

RW
Answered by Rebecca W. Biology tutor
7986 Views

Describe the structure of proteins.

Proteins are macromolecules found within living organisms that have an array of crucial functions, including catalysing enzymatic reactions and providing structural stability to cells. At the basic level,...

AC
Answered by Abbie C. Biology tutor
2934 Views

Messenger RNA (mRNA) is used during translation to form polypeptides. Describe how mRNA is produced in the nucleus of a cell.

This is a "Describe" question worth 6 marks, so you should aim to write a minimum of 6 points in your answer to get the full 6 marks.
Messenger RNA is produced in the nucleus of a cell by ...

RV
Answered by Rebecca V. Biology tutor
17957 Views

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