The bases and heights of a cylinder and a cone are the same. The volume of the cylinder is V cm³. What is the volume of the cone in cm³ ?

All gas exchange surfaces in vertebrate animals have:

All of these are used as food additives EXCEPT for:

One example of an emulsifying agent is:

Boiling and evaporation both involve a liquid turning into a vapour (i.e. a gas).The following statements relate to water.Which one is NOT true?

In an endothermic reaction:

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

We could reach the survivors neither by boat or by plane, and so we abandoned our search as futile.

THE ITEM refer to the following family functions.

The family produces children and maintains the population.

Why is testing a leaf for starch a reliable indication that photosynthesis has taken place?

What unit measurement is used to express the speed of memory?

To make cell walls, plants must have:

The particles in a liquid:

The following are all minerals EXCEPT for:

Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.

How many lines of symmetry does this shape have?

After a 10% discount, an article is sold for $360. The price before the discount was

Single-celled organisms do not need a transport system because:

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

The two main protein groups are globular and:

Which one of the following lists only differences between aerobic respiration and anaerobic respiration?