Tiny particles with the ability to invade human body?

Answer 1

The nonliving particle I believe you are referring to is the virus. Viruses come in a wide variety, but in general they seek to invade a living cell, and hijack that cells metabolic machinery, so to speak, converting the cell into a factory for producing more viruses. This is how viruses reproduce, and is the chief reason why they are not considered to be alive.

Answer 2

These are likely to be pathogens, such as viruses or bacteria, that can enter the body through different routes such as inhalation, ingestion, or direct contact. Once inside, they can replicate and cause infection or disease.

Answer 3

The most common are viruses, an important category of these is the bacteriophage or phage.

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Answer 4

Any foreign object that invades our cells is called an antigen.

Our body produces antibodies against an antigen.

Skin serves as primary line of defense against antigens.

Answer 5

Viruses are considered to be nonliving and they invade cells in order to replicate.

Answer 6

Those would be known as free radicals.

Answer 7

This is a pathogen called a virus.

Answer 8

A virus