CLINICAL MEDICINE

Detailed explanation-1: -Microorganisms that do not cause disease. Pathogens greatly outnumber nonpathogens. Microorganisms are essential in the feild of genetic engineering. Microorganisms probably appeared on earth about 3.5 million years ago.

Detailed explanation-2: -A pathogen is a microorganism capable of causing disease. It infects a multicellular organism and multiplies within it.

Detailed explanation-3: -The Pathogenic bacteria is a biological agent that causes disease to the host. They are often referred to as Infectious agents, so they have a capability to invade inside the host cells. Non-pathogenic bacteria inhabit the gut environment. These microbes are referred to as gut flora, they live outside the body cells.

Detailed explanation-4: -A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.