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What are the fundamental differences between a cell membrane and a cell wall?

Both encase different type of cells however their compositions are distinct and because of this they have different functions and distributions across cell types. Structure and composition Cell membranes are...
JM
5267 Views

how to derive escape velocity

escape volocity is the minimum volocity required for one object toescape the gravitationl feild of another.we find this by equating gravitional potental enegy and the kinetic energy of the object to 1/2 * m ...
AM
Answered by Aidan M. • Maths tutor
3685 Views

Explain what is meant by the term "rate of reaction".

A change in the concentration of reactants or products per unit time
FH
Answered by Filip H. • Chemistry tutor
2725 Views

What is ionic bonding?

Ionic bonding occurs between positive and negatively charged ions. A simple example is Sodium Chloride. Sodium has 1 outer shell electron which it wants to lose in order to create a stable electronic configu...
EN
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(x+4)((x^2) - kx - 5) is expanded and simplified. The coefficient of the x^2 term twice the coefficient of the x term. Work out the value of k.

(x + 4) (x 2 - kx - 5) = x 3 - kx 2 - 5x + 4x 2 - 4kx - 20 = x 3 + (4-k)x 2 + (-5-4k)x - 20.The coefficients are: (4-k) of x 2 and (-5-4k) of x. Now we can write the equation:(4-k) = 2(-5 - 4k) /expand4 - k ...
MF
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