Which one of the following mixtures could not be separated using the technique given? Answer: 5) B It is easy to identify W as a chromosome. This rules out options…

The diagram shows some of the stages of how a length of DNA can be removed from one organism and introduced into another organism. Which row is correct? Answer: 4)…

A straight line passes through the points P ( 3,− 3) and Q (6, 9). Which one of the following is an equation of a straight line which is parallel…

A student carries out an experiment to determine the density of the material from which two identical solid objects are made. She uses a balance and a measuring cylinder containing…

Element X has the electronic structure 2, 8, 3.Which of the following statements about this element are correct?1 The element is in Group 12, Period 3 of the Periodic Table.2…

The diagram shows a kidney and its associated vessels from a healthy individual. Which row correctly identifies the vessels along with the concentration of urea they contain. Answer: 1) D…