The following diagram shows a model used to show how breathing movements take place:

Which part of the model represents the diaphragm?

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

All of the following have endoskeletons EXCEPT for:

THE ITEM refers to the following illustration.

The pattern where many persons make the same decision as the young man in the picture is refered to as

A ripple travels over the surface of some water. Its wavelength is 2 m, its amplitude is 0.1 m and its frequency is 0.5 Hz.The speed of the ripple is:

Identify the order in which the ancestors of the Caribbean people arrived in the region.

1. Amerindians
2. East Indians
3. Europeans
4. Africans

Which one of the following foods contains the most energy per 100 g?

All of the following are organelles EXCEPT for:

A collection of several tissues which carry out a particular function is called:

An example of an air pollutant is:

Personal accounts are found in the

A lack of vitamin D in the diet causes:

The interest rate on investments in a bank decreased from 8 ¹/₂ per cent per annum to 6 per cent per annum. The difference in annual interest on a deposit of $2 000 is

Biological catalysts in yeast are called:

Instructions: Choose from the four suggested answers the word which is closest to OPPOSITE in meaning to the underlined word.

She paid meticulous attention to her work as she attached the beads to the costume.

Which one of the following is NOT a vector quantity?

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

Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.

As the teacher continued his lesson, John began to lose all interest, imagining himself laying on his bed relaxing.

All of these are fractions from crude oil EXCEPT for:

The only common gas that turns moist red litmus paper blue is: