Top answers

Discuss ageing populations and policies to counteract this

example japan creates issues of high dependency, especially on young population reduces work force and causes social burden policies:increase retirement ageencourage children: eg subsidies in France encourag...
PS
Answered by Perdita S. • Geography tutor
2024 Views

Describe the structure of proteins in terms of Primary, Secondary, Tertiary and Quaternary structures

The primary structure comprises of the original sequence of amino acids resulting in a polymer of amino acids. These are joined to adjacent amino acids through by peptide bonds, formed by condensation reacti...
KQ
Answered by Kashif Q. • Biology tutor
5307 Views

What are the differences between mitosis and meiosis?

Both are forms of cell division Mitosis "Normal" cell division- how cells increase in number 1 "parent" cell produces 2 "daughter" cells All the cells involved are genetically i...
AB
Answered by Amy B. • Biology tutor
3226 Views

It takes 4200 Joules to heat up 1 kg of water by 1 C^o. If you have a kettle with a power of 2500 Watts, how long will it takes to boil 0.8 kg of water from an initial temperature of 25 C^o to the nearest second??

Energy required calculated using the equation for specific heat capacity: m c dT = dE where m is mass, c is specific heat capacity and dT is the change in temperature. Time taken is calculated using the rela...
BC
Answered by Benjamin C. • Physics tutor
7831 Views

For the equation x^2 - 2x - 8 = y find: (a) The roots. (b) The y-intercept. (c) The coordinate of the turning point

(a) Several methods to do this, simplest would be to factorise the quadratic into (x - 4)(x + 2) = 0 and from here see that root occur at x = 4 and x = -2.(b) Substitute x = 0 into the equation 0^2 - 2 0 - 8...
BC
Answered by Benjamin C. • Maths tutor
5499 Views