__________ is a temporary holding area for data, application program instructions, and the operating system.

Malaria is spread by:

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

Biological catalysts in yeast are called:

A man's regular pay is $3 per hour up to 40 hours. Overtime is twice the payment for regular time. If he was paid $168, how many hours overtime did he work?

The expression a² + b² is equivalent to

The type of bonding that involves loss or gain of electrons is called:

All of the following are possible consequences of global warming EXCEPT for:

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

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

All the following software are examples of operating systems EXCEPT

The major plant nutrients written as NPK refer to phosphorus, nitrogen and:

Which of one the following statements about phloem cells is NOT true?

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.

Urea is made from surplus proteins in:

Which device has internal storage in the form of a buffer?

All of the following processes result in energy loss from an ecosystem EXCEPT for:

Tooth decay can be caused by:

g/dm³ are units of:

A business operates its petty cash on the imprest system. At the beginning of the month the petty cashier was given $20.00 out of which she spent $15.20. How much will she be reimbursed?