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Biology

A Level

Explain the process of transcription.

Transcription is the process by which a complementary mRNA copy is made of the specific region of the DNA molecule which codes for a polypeptide (about 17 base pairs). A specific region of the DNA molecul...

Answered by Flora T. • Biology tutor

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Describe the process of eukaryotic DNA replication

DNA helicase unzips and unwinds the DNA double helix by breaking hydrogen bonds between complementary base pairs. This exposes the bases on two strands creating template strands. Free floating nucleotides...

Answered by Louis B. • Biology tutor

10350 Views

What does ELISA measure?

ELISA, an acronym for enzyme linken immunoabsorbant assay, is a means of measuring the amount of a specific antibody in serum through treating a 96 well plate with antigens that stick well to the plastic ...

Answered by Kyle M. • Biology tutor

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State three differences between DNA and mRNA molecules

DNA contains the base Thymine, whereas mRNA contains Uracil DNA is double stranded whereas RNA is single stranded DNA contains deoxyribose sugar, whereas mRNA contains ribose sugar DNA is long whereas mRN...

Answered by Charlotte B. • Biology tutor

6735 Views

What happens to the filtrate in the loop of Henle?

The point of the loop of Henle is to reduce the quantity of water in the filtrate and so reduce water loss. The loop is split into three key areas: The descending limb, the thin ascending limb and the thi...

Answered by Sam M. • Biology tutor

41398 Views