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Explain what is meant by the term "perfect competition"

Perfect competiton in a market is defined as being a set of conditions where markets have little to no entry or exit barriers. These may be natural or synthetic. An example of a natural barrier to entry i...

Answered by Lucas E. • Economics tutor

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How does the body's response to a second infection by a bacterial pathogen differ from the first? (3 marks)

faster response due to the presence of memory cells

there are many more cells specific for this pathogen therefore clonal selection and expansion of B cells is quicker

BT
Answered by Beth T. • Biology tutor
2396 Views

Explain the role of inorganic ions in the body.

The resting membrane potential of cells is maintained by the actions of Na+ and K+. A resting cell is impermeable to Na+ so the concentration of Na+ is greater outside the cell than in it. However the cel...

Answered by Callum D. • Biology tutor

6727 Views