Match the description to the infectious agent. Column A 1. tiny, single-celled organisms with no nucleus inside the digestive track: tiny, single-celled organisms with no nucleus inside the digestive track 2. no cells, takes over a host cell from which it replicates and spreads into neighboring host cells: no cells, takes over a host cell from which it replicates and spreads into neighboring host cells 3. multicellular organisms made up of cells that have cell walls and well-defined nuclei: multicellular organisms made up of cells that have cell walls and well-defined nuclei 4. an organism that lives in or on another organism and takes nutrients at the expense of the host.: an organism that lives in or on another organism and takes nutrients at the expense of the host. Column B a.bacteria b.parasite c.viruses d.fungi

Answer 1

Here's the correct matching of the descriptions in Column A to the infectious agents in Column B:

1. tiny, single-celled organisms with no nucleus inside the digestive tract: a. bacteria
2. no cells, takes over a host cell from which it replicates and spreads into neighboring host cells: c. viruses
3. multicellular organisms made up of cells that have cell walls and well-defined nuclei: d. fungi
4. an organism that lives in or on another organism and takes nutrients at the expense of the host: b. parasite

So, the matches are: 1 - a 2 - c 3 - d 4 - b