Top answers

What is the job of the cell membrane?

Controls the movement of substances into and out of the cell.
Answered by • Biology tutor
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How can genetic engineering be used in forensic science and paternity tests?

Genetic fingerprinting is a technique that utilises the presence of highly repetitive non-coding DNA sequences in the human genome, known as variable number tandem repeats (VNTRs). These vary considerably be...
SW
Answered by Samuel W. • Biology tutor
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Explain the process of phagocytosis

The first stage of phagocytosis is named chemotaxis. This stage involves the migration of the phagocyte (a type of lymphocyte/ white blood cell) towards a pathogen. This occurs due to foreign antigens (non s...
GL
Answered by Grace L. • Biology tutor
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What is a mutation and how do they affect proteins?

A mutation is a change in the sequence of DNA bases in the genetic code of an organism. They're actually very common, and cause variation in a species. They are random changes, and can sometimes be inherited...
LF
Answered by Lois F. • Biology tutor
4282 Views

Describe the process of gene transcription?

Transcription is the process in which a gene's DNA sequence is copied to form a messenger RNA molecule. The DNA molecule unwinds due to the action of DNA helicase. RNA nucleotides complementary base pair wit...
JF
Answered by John F. • Biology tutor
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