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First Aid › View

How can you find out if a bandage is too tight around an arm?

A. The person complains about the pain.

B. If you press a finger nail, the colour doesn’t return when you release.

C. The blood goes into the fingers and they swell.

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Biotechnology › View

What is the function of a primer?

A. To identify the particular region of DNA to be copied by PCR.

B. To copy DNA.

C. To create DNA nucleotides.

D. To maintain the temperature of the PCR reaction.

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