Top answers

Which component of the vaccine stimulates an immune defence? How do they prevent people from catching the disease e.g. mumps?

inactive pathogens white blood cells produce antibodies these antibodies can be then quickly released whrn the immune system comes into contact with the live pathogen and destoy it
IR
Answered by Ines R. • Biology tutor
3256 Views

Does water travel up or down the concentration gradient?

Via osmosis, water travels down the concentration gradient to an area of lower water concentration and higher concntration of other substances.
JR
Answered by Jenny R. • Biology tutor
7927 Views

"Me llamo Martina. Tengo 12 anos y vivo con mi familia - este incluye mis abuelos. Mi relación con mi abuela es mejor que mi relación con mi madre porque mi abuela me apoya" Who does martina have a better relationship with?

Martina has a better relationship with her grandmother because she says 'mi relación con mi abuela es mejor' which translates to 'my relationship with my grandmother is better'.
MB
Answered by Martha B. • Spanish tutor
3144 Views

solve 6(x + 4) = 2x -4

The first step is to expand the brackets on the left hand side, you can either use the arrow method or the box method for this. This gives you: 6x + 24 = 2x - 4 Then you want to gather all the x's onto the s...
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Answered by Martha B. • Maths tutor
5291 Views

Can you explain the Boston matrix to me?

The Boston matrix is a model used by companies to display their product portfolio. The Boston matrix is split into four ways of classifying products. First there are stars these are products which have high ...
RH
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