Question

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.

Answer 1

1. Tiny, single-celled organisms with no nucleus inside the digestive track: bacteria.

2. No cells, takes over a host cell from which it replicates and spreads into neighboring host cells: viruses.

3. Multicellular organisms made up of cells that have cell walls and well-defined nuclei: fungi.

4. An organism that lives in or on another organism and takes nutrients at the expense of the host: parasite.

What are bacteria, viruses, fungi and parasites?

Bacteria are prokaryotic organisms which do not have a defined nucleus, their genetic content will be dispersed in the cytoplasm. Viruses are agents that need a host organism to be able to replicate since it uses its machinery to be able to replicate its DNA or RNA. Fungi are eukaryotic organisms which are heterotrophic and reproduce by means of spores. And, finally, parasites are organisms that will live inside a host and depend on it to be able to feed.

Therefore, we can confirm that option 1 is bacteria, option 2 is viruses, option 3 is fungi and option 4 is parasite.

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