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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 (no...

GL
Answered by Grace L. Biology tutor
2504 Views

Prove, by induction, that 4^(n+1) + 5^(2n-1) is always divisible by 21

Firstly when proving something by induction, we always show that the base case works, i.e. we plug in n=1. In this case we get 42 + 51 =21, which is divisible by 2...

GS
8852 Views

Discuss evolutionary explanations of eating behaviour (6 marks)

Eating habits and food preferences are said to have come from our ancestors and adapted in our environment of evolutionary adaptation (EEA). Are ancestors were hunter-gatherers who were constantly battlin...

Answered by Psychology tutor
2819 Views

If x^2-5x+6=0, solve for x.

Since x^2-5x+6=0 is a quadratic we need to factorize before solvingAll quadratics fall under this formula ax^2+bx+c=0 so in this case a=1, b=-5 and c=6Drawing the very common ac b table we get: ac|b ...

ME
Answered by Matthew E. Maths tutor
2705 Views

The straight line joining the points (1, -2a),(a, 1) has a gradient of 5, find the value of a

m=y-y1/x-x15=1-(-2a)/a-15=1+2a/a-15(a-1)=1+2a5a-5=1+2a3a=6a=2

TB
Answered by Theo B. Maths tutor
3296 Views

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