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How are mineral ions transported into the root cells from the soil?

Mineral ions are transported into root cells by INDIRECT ACTIVE TRANSPORT/UPTAKE. First of all, hydrogen ions are pumped out of the root cells' vacuoles into the soil. This creates a conc...

Answered by Marta S. • Biology tutor

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How can you factorise quadratics with a an x^2 coefficient higher than one?

If we take an example question such as 20x² - 130 x = -20020x² - 130 x = -200 Divide by 10 to simplify2x² - 13x = -20 Take all of the terms to the left2x²- 13x...

Answered by Vahgisha T. • Maths tutor

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What is the difference between atom economy and percentage yield?

First I will start by defining the two terms. Atom economy is calculated by dividing the total relative molecular mass of the desired product over the total relative molecular mass of the reactants. You c...

Answered by Vahgisha T. • Chemistry tutor

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What is diffusion, and what are the factors that affect the rate of diffusion

Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration

Answered by Delwin J. • Biology tutor

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There are a number of push and pull factors that cause rapid urbanisation in lowincome developing countries (LIDCs). Explain how two push factors cause rapid urbanisation in LIDCs.

One push factor that can cause rapid urbanisation in LIDCs are the lower levels of education quality within rural areas. For example in China, rural Tibet has an illiteracy rate of 43% compared with the m...

Answered by Hannah M. • Geography tutor

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