Most plant and animal cells contain:

The Haber Process is used to make:

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

In the equation, carbon monoxide + oxygen → carbon dioxide, a reactant is:

All of the following are components of an ecosystem EXCEPT for:

0.0039 × 10^-2 in scientific notation is

In the Venn diagram above, the shaded portion represents

The number of double bonds in a molecule of carbon dioxide is:

Decomposers are important in the process of decay because:

Democratic control and open members are features of a

The second most common gas in the atmosphere is:

Which one of the following best compares the eye and a camera?

In many Caribbean countries the Queen of England is the head of state.

Such countries may be described as

3 ⁴/₅ expressed as a decimal is

Hydrochloric acid forms salts called:

The point where two neurones connect is called:

Which of the following social issues are associated with the use of illegal drugs by adolescents?

1. Criminal activity
2. Indiscipline
3. Early marriage
4. Poverty

Which of the following are natural barriers to infection?
Ⅰ tears
Ⅱ skin
Ⅲ stomach acid
Ⅳ mucus

Given ƒ : x -> 3x - 1, and g : x -> x², then ƒg(-2) =

A girl whose weight is 250 N walks up a slope 40 m long onto a platform 3 m high. Her gain in gravitational potential energy is: