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Explain the difference between ventilation, gas exchange and cell respiration.

ventilation - achieved via breathing, the physical act of exchanging air between the lungs and the atmospheregas exchange - passive diffusion between alveoli and the bloodstream, resulting in the exchange...

IS
Answered by Izabela S. Biology tutor
2561 Views

What is the difference between competitive and non-competitive inhibition?

Competitive inhibition means the inhibitor molecule is a similar shape to the normal substrate molecule. Because of this similar shape, the inhibitor molecule is also able to bind...

SH
Answered by Sophie H. Biology tutor
2339 Views

"Assess the view that natural law is of no help with regard to the issue of euthanasia."

Natural Law was first introduced by Aristotle, but was later developed by Thomas Aquinas (1225-74). It determines the right course of action through the lens of what our natural desires are and whether th...

MA
7215 Views

The point P has coordinates (3, 4) The point Q has coordinates (a, b) A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an expression for b in terms of a

Perpendicular gradients multiply to give -1. The gradient of the perpendicular line (y=-3/2x+7/2) is -3/2 , so the gradient of PQ is 2/3. Using gradient formula change in y/ change in x :(4-b)/(3-a) = 2/3...

LD
Answered by Lizzie D. Maths tutor
2843 Views

Explain how nucleophilic substitution for a haloalkane actually occurs?

In a haloalkane, not all of the bonds are the same. We have to consider the fact that the halogen atom (for instance a bromine atom) is more electronegative than either carbon or hydrogen...

NK
Answered by Naman K. Chemistry tutor
1763 Views

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