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GCSE

What is the enzyme lock and key mechanism?

Enzymes are proteins and they have specific shapes.Do you know what active site is? Region where the chemical reaction happen, this is a different shape on different enzymesDo you...

MB
Answered by Millie B. Biology tutor
4147 Views

Rationalise the Denominator: 5+√2/(√3)

To rationalise the denominator without chainging the value of the equation, multiply both the numerator and denominator by the value of the denominator.( (5+√2)/(√3) )*(√3/√3) = ( (5√3)+√6 )/3

MA
Answered by Mohammed A. Maths tutor
3435 Views

What is terminal velocity?

Terminal velocity is the final velocity an object achieves during freefall through a medium under the influence of gravity and upthrust from the medium. For example, dropping a tennis ball from a plane. T...

CJ
Answered by Chenyang J. Physics tutor
4225 Views

How does an adult develop immunity to a toxin (3 marks)

They must first become exposed to the bacteria or pathogen that produces the toxin. This will either be though encountering it naturally or through a vaccination. Once the pathogen has entered their body ...

LH
Answered by Lexie H. Biology tutor
4532 Views

Factorise y^2 - y - 12

Looking for a combination of numbers that would multiply to give (-12_ but add together to give (-1)e.g. -6, 2?....-2,6....-4,3 = yes!thus,(y-4)(y+3)

LM
Answered by Lavannya M. Maths tutor
3793 Views

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