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When do you use 'avoir' or 'être' for the passé composé?

The passé composé is composed of two parts - the auxiliary verb (avoir or être) in the present tense and the past participle of the verb you want to put into the past tense (for example, jouer> joué). The...
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Answered by Rachel D. • French tutor
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Name 3 differences between RNA and DNA (3).

RNA is single stranded however DNA is double stranded. RNA contains the base uracil however DNA contains the base thymine. RNA contains the sugar ribose however DNA contains the sugar deoxyribose. RNA is fou...
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Answered by Samodani W. • Biology tutor
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How do I prepare for the Language Aptitude Test (LAT) when it isn't a language that I can learn?

The LAT can be quite intimidating given that it's a made up language which seems nothing like the language you're studying at school. However, like all languages, the made-up one has rules which you can work...
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Given that y= x^(-3/2) + (1/2)x^4 + 2, Find: (a) the integral of y (b) the second differential of y

This is a typical question for a Core 1 paper. (a) integral of y = (-2)x^(-1/2) + 0.1x^5 + 2x +C Method: Increase the power of x by +1, divide the term through by the new power. (b) dy/dx = (-3/2)x^(-5/2) + ...
Answered by • Maths tutor
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Explain how antibiotic resistance can be developed by bacterial populations.

Within the initial population of bacteria, some will have an allele that provides them with resistance to a specific antibiotic which is due to mutations, random spontaneous changes in the base sequence of D...
Answered by • Biology tutor
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