The following statements are about nuclear division by meiosis and mitosis.1 In animals meiosis only occurs in the reproductive organs.2 Mitosis can result in the formation of clones.3 Meiosis results…
The total surface area of a cylinder is numerically the same as its volume. The radius of the cylinder is r cm, the height is h cm. Express h in…
The diagrams below show velocity-time or distance-time graphs for 4 different objects, P, Q, Rand S. Which graph(s) show an object accelerating at 2.4m/s2? Answer: 19) B A straight line…
Magnesium hydrogen phosphate contains the following ions: Mg2+, H+ and PO43-. Which one of the following is a possible formula for magnesium hydrogen phosphate? Answer: 18) B To solve this…
In the family tree shown below, both P and Q are carriers of a recessive allele which causes a condition. Only individuals R and X have the condition. What is…
A shape is formed by drawing a triangle ABC inside the triangle ADE. BC is parallel to DE.AB = 4cm BC = xcm DE = x + 3cm DB =…
The circuit shows five identical filament bulbs designed to work at 12V connected in a circuit with two switches. Switch P is initially open and switch Q is initially closed.…
Which of the following ionic equations are correct?1 X+ e- → X2 X- e- → X3 O2- + 2e- → O4 O2- - e- → O25 2I- 2e- → I6…
Signals are transmitted from one neuron to the next neuron, by molecules. These statements are about this process: 1 Transmitter molecules are formed in the receptors.2 The signal is transmitted…
The mean time for running a race by a group of 20 people was 54 seconds. The times for a second group of people were added and the value of…