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How does a white blood cell ingest and kill a bacteria?

White blood cells can kill pathogens in multiple ways, one of these is called phagocytosis. During phagocytosis, a specific white blood cell called a phagocyte recognises the bacteria through a process ca...

Answered by Beth F. • Biology tutor

14675 Views

Find the x value of the stationary points of the graph y = x^2e^x

The problem here can be solved quite easily by thinking about the graph. A stationary point occurs on a graph when it becomes 'flat'. You can think of this visually as the top of a hill or the bottom of a...

Answered by Serkan M. • Maths tutor

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To desire something, or someone, brings with it pain and pleasure in equal measure. Discuss the significance of desire in two texts you have studied.

Despite the 38 years between publication, the two contrasting texts of the play ‘A streetcar named Desire’ and the dystopian novel, ‘The Handmaids Tale’ both explore the theme of the juxtaposing emotions ...

Answered by Amelia E. • English Literature tutor

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The Curve C has equation y = 3x^4 - 8x^3 -3. Find the first and second derivative w.r.t x and verify that y has a stationary point when x = 2. Determine the nature of this stationary point, giving a reason for your answer.

The first derivative is otherwise denoted by dy/dx.dy/dx = 12x^3 -24x^2.The second derivative is denoted by d²y/dx², otherwise known as the first derivative of the function dy/dx.d

Answered by Jemisha B. • Maths tutor

5672 Views

Describe the structure of DNA

DNA is made up of two anti-parallel strands running in opposite directions. It is made up of individual monomers called nucleotides which in turn contain: a sugar (deoxyribose), a base (A, G, C or T), and...

Answered by Jamie H. • Biology tutor

2769 Views