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Double-helix DNA strands are separated by breaking the hydrogen bonds between complementary bases. One strand acts as a template strand which complementary bases bind to (adenine to uracil, thymine to ade...

Question 2 will ask about language methods used by the writer to describe a person, place or thing within a text and should take you 10 minutes to complete. This question focuses on AO2: "Explain, co...

sin(2x)=sin(x+x) =sin(x)cos(x)+cos(x)sin(x) =2*sin(x)*cos(x); cos(2x)=cos(x+x) =cos(x)cos(x)-sin(x)sin(x) =[cos(x)]²-[sin(x)]² Now let x+y=a and x-y=b, then x=(a+b)/2 and y=(a-b)/2. ...

This is an example of a simultaneous equation - 2X + Y = 5X + 3Y = 10 You can think of X and Y as apples and oranges from a market. You know that if you buy 2 apples and 1 orange it cost £5, but this does...

El año pasado, fui a Grecia con mis padres y mi mejor amigo que se llama Jack. ¡Lo pasé bomba! He estado yendo a Grecia desde que tenía ocho años. Todos los días fuimos a la playa y nadamos en el mar. Ade...