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Describe how a phagocyte defends the body

The phagocyte is attracted to a pathogen, the pathogen binds to the phagocyte and then the phagocyte engulfs the pathogen. The pathogen is then contained in a phagosome which has been cleaved off the membran...
GG
Answered by George G. • Biology tutor
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Discuss, with examples, the role of molecular machinery within transcription and translation.

Transcription and translation are processes that result in gene expression through the synthesis of proteins based upon the reading of genes by molecular machines. These processes arise from the action of a ...
WS
Answered by William S. • Biology tutor
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What is PCR?

PCR stands for Polymerase Chain Reaction. It is an experimental technique used to amplify a sample of DNA. It requires a number of things: a DNA sample, oligonucleotide primers for either side of the desired...
JH
Answered by Jamie H. • Biology tutor
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What happes in mitosis?

Steps: Use diagrams to draw each step 1.Interphase (think 'I' is also a number 1 to start!) DNA has been copied (late G2 phase). Chromosomes are now existing as 2 pairs called sister chromatids but can't bee...
KH
Answered by Kirsty H. • Biology tutor
3169 Views

Describe the structure of an antibody

Antibodies are made from 4 chains of peptides, two heavy chains and two light chains. There is also a constant region (Fc) and a variable region (Fab) which are used to bind to cells and antigens respectivel...
JH
Answered by Jamie H. • Biology tutor
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