1) ) are one-celled organisms visible only with a microscope. a) viruses b) bacteria c) protozoa d) fungi 2) bacteria is one of the earliest forms of life on earth. true or false true false 3) viruses are self-sufficient. true or false true false 4) aids is one example of a a) bacteria b) protozoa c) virus d) fungi 5) penicillin is an example of what? a) bacteria b) protozoa c) virus d) fungi 6) protozoa can live outside the human body. true or false true false 7) tapeworms and roundworms are examples of a) helminths b) bacteria c) viruses d) fungi 8) fever is a way your body deals with infection. true or false true false 9) what is the best defense for diseases? a) antibiotics b) over the counter drugs c) prescriptions d) vaccinations 10) when do you not need to call the doctor? a) when you have the sniffles b) difficulty breathing c) fever of 100.4 d) blurred vision 11) the wbc count is used to suggest the presence of an infection. true or false true false 12)counts that return to normal indicate your condition is getting worse. true or false true false 13) which is the easiest way to get a disease, direct or indirect contact 14) mothers can pass diseases onto unborn children. true or false true false 15)insects do not carry diseases. true or false true false 16) e. coli is contracted through a) insects b) sexual contact c) food d) air