In an airport, a system consisting of sensors, bar code readers and remote controls is MOST LIKELY used for __________.

Which of the following is the MOST important aim of the trading arrangements within CARICOM?

Which one of the following is NOT a reflex action?

Which of the following are all deficiency diseases?

A detector close to a sample of radioactive material records 76 counts per second (cps). Precisely 2 days later the count rate has fallen to 22 cps.The count rate due to background radiation, taken immediately before and after the experiment, averaged 4 cps. The half-life of the material is:

Vegetables like cauliflower, cabbage and broccoli have been bred from the original wild brassica plant by:

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

Such countries may be described as

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

__________ is a primary storage device that may be programmed and reprogrammed by the user.

All of the following are features of a gas exchange surface EXCEPT for:

Which one of the following is NOT a function of the placenta?

After a 5% discount, an article is sold for $475. The price before the discount was

With iodine, starch changes colour to:

More collisions between particles are likely to happen if a solution is made:

Enzymes catalyse specific reactions by having an active site where the substrate fits.This theory is called:

Dividing 9 × 10^-2 by 3 × 10^-8 gives:

Which one of the following comparisons of inhaled and exhaled air is correct?

What is the value of u in the sequence 2 , 7 , 14 , 23 , 34 , u ?

The units we use for heat given out by a reaction are:

Which of the following sets has an infinite number of members?