The optimum pH for most enzyme action is:

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?

A cell in an embryo divides by mitosis three times in succession. How many cells will be formed from these divisions?

Which of the following items is not a component of a graphical user interface?

The decimal equivalent of ⁷/₈ is

The main site of action of ADH (antidiuretic hormone).

The mean of ten numbers is 58. If one of the numbers is 40, what is the mean of the other nine?

When potassium burns in chlorine, the material that is oxidised is called:

Simple sugars are called monosaccharides because:

All of the following are general purpose software EXCEPT __________.

A salt that contains water of crystallisation is:

In an endothermic reaction:

THE ITEM refer to the following family functions.

The family provides security and love for the growing children.

Removal of forests may cause all of the following EXCEPT

All of these reactions are exothermic EXCEPT for:

We use expanded polystyrene cups for heat of reaction experiments because the cups are:

The lowest and the highest frequencies a typical young person′s ear can detect are approximately:

75 g of freshly dug soil was placed in an oven at 105 ℃ for 24 hours. It was allowed to cool, then reweighed. If the final mass of the dry soil was 66 g, what was the % water content of the original soil sample?

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

All of these are used as food additives EXCEPT for: