Which of the following is NOT found dissolved in plasma?

In a plant, water and dissolved minerals are transported in the:

Ammonia gas spreads out faster than hydrogen chloride, showing that it is:

A rectangular tank is 50 cm long, 50 cm wide and 10 cm deep. The volume of liquid it will hold is

Which one of the following structures is responsible for controlling entry and exit of materials into and out of the cell?

Which of the following is NOT transported in phloem?

Which of the following would NOT be used in conserving the environment in the Caribbean?

Items bought by a trader for $80 are sold for $100. The profit expressed as a percentage of cost price is

A spring is 100 mm long when unstretched. A 40 N load is hung from it, and its total length increases to 120 mm. A different load on the spring causes it to become 150 mm long. If the spring obeys Hooke′s Law, this second load is:

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

Transpiration is:

In the eye, rays of light are focussed on the retina by being refracted at:

Which of the following may result if many people do what the young man in the picture is doing?

1. The rapid growth of cities
2. The growth of shanty towns and squatter settlements
3. The brain drain experienced by many developing countries
4. Inadequate housing, educational and health facilities in urban areas

The monomer used to make poly (propene) is called:

The sizes of the interior angles of a polygon are x°, 2x°, 60°, 3x° and 36°. What is the value of x ?

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

Sea breezes result because:

A salt that is anhydrous contains no:

Acid soils can be neutralised by adding:

The electrical charges on a proton and an electron are: