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How does the equation of a circle work? What do the individual parts represent?

A student will often see the equation of a circle in the form (x-a)2+(y-b)2=r2. In this instance, a and b simply represent numbers. They are not variables. In fact, a repr...

ML
Answered by Milo L. • Maths tutor
4285 Views

How is an action potential generated?

Firstly the resting membrane is set by Na+/K+ ATPase so that 3 Na+ moves out for every 2K+ that moves in; this creates a negative membrane potential of around -65mV. To initiate an action potential the me...

KB
Answered by Kate B. • Biology tutor
4682 Views

How does the body respond to decreasing blood glucose?

Blood glucose levels start to fall in the blood. Blood flowing through the pancreas is low in glucose, and this is sensed by cells in the pancreatic tissue. In response, it produces glucagon, (

EG
Answered by Eleanor G. • Biology tutor
3660 Views

What happens during mitosis

Mitosis is the seperation of DNA. There are 4 stages of mitosis that you need to be aware of for A level Biology: Prophase, Metahase, Anaphase and Telophase. (I like to remember this order as P.Mat)

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RW
Answered by Ruth W. • Biology tutor
3093 Views

What is a redox reaction?

A redox reaction is a reaction where both reduction and oxidation are happening simultaneously.

Reduction is the gain of electrons, where as oxidation is the grian of elctrons. I like to remember t...

RW
Answered by Ruth W. • Chemistry tutor
3871 Views

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