Write true or false for the following statements :

Syphilis and AIDS are transmitted by casual physical contacts.

Write true or false for the following statements :

All diseases have immediate and contributory causes. Most of the diseases will have many causes, rather than one single cause.

Write true or false for the following statements :

High blood pressure and cancer have mostly external causes and are generally caused by infectious agents.

Write true or false for the following statements :

All viruses live outside host cells whereas bacteria very rarely do.

Write true or false for the following statements :

Antibiotics commonly block biochemical pathways important for bacteria. But viruses do not use these pathways at all, and that is the reason why antibiotics do not work against viral infections.