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How can antibody neutralisation of pathogenic antigens help prevent cellular damage? (4 marks)

Prevent:Antigen attachment to cell > cell invasion > pathogen replication > toxin production.
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Answered by Owen F. • Biology tutor
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Define "cellular immune response".

An immune response mediated by T lymphocytes.
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Answered by Owen F. • Biology tutor
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Show that the two lines are parallel: L1: 4y = 24x +12, L2: 2y + 13 = 12x

Two lines are parallel when they have the same gradient. When the equation is written in the form: y = mx + c, m is the gradient. We need to arrange our equations in the form y = mx + c as this is the easies...
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Answered by Dominique T. • Maths tutor
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Simplify fully:6y2 +7y - 6y - 4 - 3y2

Simplify: 6y 2 +7y - 6y - 4 - 3y 2 The first step is to group the terms of the equation into y 2 terms, y terms and terms with no y: This gives, 6y 2 -3y 2 + 7y - 6y - 4 Next we are going to look at each ter...
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Answered by Dominique T. • Maths tutor
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What is 4/5 of 60?

Okay so what this question is asking for is 4 lots of 1/5 of 60. So our first step is the find 1/5 of 60 and we do this by dividing by 5. If you don't know your 5 times table off the top of your head you can...
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Answered by Dominique T. • Maths tutor
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