Top answers

All subjects
A Level

Describe how negative feedback is used to control blood glucose concentration

Blood glucose concentration levels fluctuates depending on what has been eaten and how much activity has been done. alpha and beta (B) cells in...

CW
Answered by Catherine W. Biology tutor
4494 Views

The boiling point of the halogen elements increase down the group from chlorine to bromine to iodine. Please explain this trend for 3 marks.

The number of electrons in the halogen atom increases as you move down the group (1st mark achieved here), causing stronger London forces to arise between the molecules of said halogen (2nd mark achieved ...

AL
Answered by Aaron L. Chemistry tutor
4375 Views

What is elasticity and why does it matter to economists?

Elasticity is, in general terms, the amount supply or demand will react to a change in another variable such as income or price. It is very important to economists as it will allow them to estimate econom...

AB
Answered by Aodhan B. Economics tutor
2147 Views

Why have Central Banks introduced Quantitative Easing? What other policies have been introduced in the 21st Century?

Central Banks have introduced Quantitative Easing (QE) as an additional mechanism to stimulate inflation in the economy.The two mechanisms that drive inflation (theoretically as this has not been proven a...

Answered by Economics tutor
1760 Views

Explain the market failures associated with increasing transport use.

A market failure is when an allocation of resources has a negative effect on a third party that is outside the market mechanism. The third party effects are negative externalities. Increasing transport us...

Answered by Economics tutor
9175 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning