1- All of the following are true about the DNA cloning, EXCEPT: a- Endonuclease enzyme for cutting at specific site. b- Ligase enzyme for binding. c- Cutting DNA to multi portion. d- Using hose cell (E.Coli) for duplication. e- Using plasmid. 2- Pernicious anaemia is due to deficiency of: a- Vitamin A b- Vitamin C c- Folic acid d- Vitamin E e- Cyanocobalamin 3- In chromosomal DNA what is true about DNA: a- Single long strand of DNA b- Single long strand of RNA 4- Histones are related to: a- DNA b-RNA 5- The treatment of Lyme disease: a- Doxycycline + amoxicillin + cefuroxime 6- Drug of choice for acute sinusitis: a- Ciprofloxacin b- Amoxicillin c)penicillin 7- What cause endocarditis: a- Staph. Aureus b-Streptococcus pneumonia coagulase negative staph. Candida albicans (yeast) also causes.