NEET BIOLOGY

Detailed explanation-1: -Viruses are non-cellular, microscopic infectious agents that can only replicate inside a host cell. From a biological perspective, viruses cannot be classified either a living organism or non-living. A virus can be an infectious agent which only replicates within a host organism.

Detailed explanation-2: -Infectious agents are organisms that are capable of producing infection or infectious disease. They include bacteria, fungi, viruses, and parasites.

Detailed explanation-3: -Viruses are tiny infectious agents that replicate only in the living cells of other organisms. Viruses have a very simple structure consisting of genetic material in the form of DNA or RNA? within a protein? capsule. They can infect all types of life forms, from animals to plants and bacteria? to amoebae?.

Detailed explanation-4: -(VY-rus) In medicine, a very simple microorganism that infects cells and may cause disease. Because viruses can multiply only inside infected cells, they are not considered to be alive.

Detailed explanation-5: -Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. Some-but not all-infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious.