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How does antibiotic resistance arise and how can resistance spread?

i. How does antibiotic resistance arise? antibiotic resistance = bacteria that cannot be treated with antibiotics resistance arises when bacterial genes mutate (=a change in base s...

Answered by Keemia A. • Biology tutor

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In which contexts should I use the present subjunctive instead of the present indicative?

Knowing when to use the present subjunctive instead of the present indicative can be tricky, but luckily there is a handy acronym to help you remember when you need it…
WEIRDO

Answered by Hannah K. • Spanish tutor

1764 Views

Solve algebraically the simultaneous equations x^2 + y^2 = 25 and y − 2x = 5 (5 marks)

First consider each equation separately and label them with a number. x² + y² = 25 (1) y - 2x = 5 (2)This question is difficult as it involves squa...

Answered by Karisma S. • Maths tutor

10582 Views

Factorise y^2 + 27y and simplify w^9/w^4

y² + 27y = y(y + 27)To factorise you need to find the common factor between each part of the equation. In this case y is common between the different parts of the equation. Therefore you take y...

Answered by Lucy M. • Maths tutor

7716 Views

What is oligopoly?

An oligopoly is a type of market structure. A good example to think about would be the supermarket industry, where we can see our main suppliers of this industry are the likes of Tesco, Asda, Aldi etc. In...

Answered by Siya P. • Economics tutor

7339 Views