Active transport:

A machine costs $10,000. It has an expected life of six years and has a residual value Of $400. Using the straight-line method, what is the depreciation per annum?

A molecule of ethene can be described as all of these EXCEPT for:

Cells become specialised to carry out different roles.This process is called:

When we sweat, we lose heat because:

The specific heat capacity of a particular liquid is 3000 J kg^-1 K^-1. A large beaker containing 2 kg of the liquid has to be warmed from 25 ℃ to 35 ℃. A 100 W heater is used. If all the thermal energy could be transferred to the liquid, how long would it take?

Which of the following sets has a finite number of members?

Nitrogen fixation produces:

Which one of the following is NOT a harmful effect of smoking?

We can separate an insoluble solid from a liquid using:

Mrs. Green is a dry goods merchant. Which of the following transactions would result in a debit to her Cash Account?

Which of the following is the Highest Common Factor of 18, 24 and 36?

A square has the same area as a rectangle with sides of length 9 centimetres and 16 centimetres. What is the length of the square?

In the figure above, AB || CD and ∠BAD = 32° . ∠APC =

Which of the following is NOT recorded in the General Journal?

The point where two neurones connect is called:

The lowest and the highest frequencies a typical young person′s ear can detect are approximately:

To work out the heat change in a reaction we need to know just three things, the mass, the temperature change and the:

Acid soils can be neutralised by adding:

Boiling and evaporation both involve a liquid turning into a vapour (i.e. a gas).The following statements relate to water.Which one is NOT true?