Page 07 12. Which of the following diagrams represents the sequence of stages involved in mitosis? Telophase Prophase Prophase Anaphase Anaphase Metaphase Anaphase Prophase Metaphase Anaphase Metaphase Telophase Prophase Telophase Telophase Metaphase C B A D 13. Bacteriophage M13 is a virus that can infect bacteria. When bacteria in the lab are infected with M13, it is essential to use the correct ratio of one virus particle to two bacterial cells. A 0·25 cm3 sample of an E. coli culture having a concentration of 8 × 108 cells per cm3 is placed into a tube. What volume of a bacteriophage stock having a concentration of 2 × 109 bacteriophage per cm3 should be added to the cell sample to give a bacteriophage to bacteria ratio of 1:2? A 0·05 cm3 B 0·2 cm3 C 5 cm3 D 20 cm3 [Turn over