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Describe some of the means by which a plant might defend itself, bearing in mind that it is 'sessile' (it cannot move around)?

The plant could have structural defence mechanisms such as 'thorns' or 'spines' which could cause damage to the mouth of herbivores so the plant is not eaten. It could also have 'stings' which are little ...

Answered by Hester G. • Biology tutor

3174 Views

Simplify: (3x+8)/5 > 2x + 1

Multiply both sides by 5: 3x + 8 > 10 x + 5
Move 3x to RHS by subtracting 3x from both sides: 8 > 7x + 5
Move 5 to LHS by subtracting 5 from both sides: 3 > 7x
Ma...

Answered by Orlaith D. • Maths tutor

4363 Views

Factorise f(x) = x^2+4x+4 and sketch the curve, identifying the roots and minimum point of f(x).

f(x) = (x+2)(x+2) When f(x) = 0, x = -2. f'(x) = 2x + 4 When f'(x) = 0, x = -2, and corresponds to the minimum point. Therefore, the sketch of the curve will be a U-shaped parabola which touches the x-axi...

Answered by Orlaith D. • Maths tutor

3776 Views

For regular verbs which have 'avoir' as their auxiliary verb, how would you form the perfect past tense? (for er, re and ir verbs)

Take the present tense of the auxiliary (avoir)
Form the past participle for the verb by removing the ‘er’, ‘re’, and ‘ir’ and then…
For:

‘ir’ verbs add ‘i’
HG
Answered by Hester G. • French tutor
2880 Views

I know all the theory, but I can never score well with the essay questions in paper 2. Why?

As you've probably noticed, the mark scheme is incredibly specific about the terminology that you use. You could describe the process of, say, endocytosis, to great accuracy, but if you don't use the exac...

Answered by Amy W. • Biology tutor

4400 Views