Proteins are:

A cell in an embryo divides by mitosis three times in succession. How many cells will be formed from these divisions?

Which of the following conditions is NOT caused by a poor diet?

An alternate form of a gene is called an:

All of these are ordered crystalline structures EXCEPT for:

In terms of mass, compared to a proton, an electron:

2p² -15p + 25 =

A store charges 6% VAT on all sales. What is the total cost of a shirt marked at $30 ?

The number of carbon atoms in the alcohol, pentanol, is:

Which of the following statements about diffusion is NOT true?

1 mole of gas occupies 24 litres at room temperature and pressure, so the number of moles in
72 litres is:

Which of the following are all secondary sex characteristics in females?

In an ecosystem a population is:

Which of the following would DISCOURAGE emigration?

When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:

“ individual countries in the region are too small to make their presence felt on the world stage.”

Implied in this statement is the need for

All of the following have endoskeletons EXCEPT for:

The exterior angles and the interior angles of a polygon are equal. How many sides does the polygon have?

The active catalyst in a car′s catalytic converter is: