Question

what is the number one indicator that a cell is a eukaryotic cell?
there is a nucleus
they are unicellular
there is a cell mambrane
they are found in extreme environments
question 6 (bonus) (1 point)
giardia lamblia is a parasitic microorganism known to cause:
sleeping sickness
giardiasis
amoebic dysentery
malaria

Explanation:

First Question (Eukaryotic Cell Indicator)

• Eukaryotic cells are defined by having a nucleus (enclosed by a nuclear membrane), while prokaryotic cells lack a nucleus. Unicellularity is not unique to eukaryotes (e.g., bacteria are prokaryotic and unicellular). All cells (prokaryotic and eukaryotic) have a cell membrane (note: "cell mambbrane" is a typo, should be "cell membrane"). Cells in extreme environments are often prokaryotic (e.g., archaea). So the presence of a nucleus is the key indicator.

• Giardia lamblia causes giardiasis (intestinal infection). Sleeping sickness is caused by Trypanosoma. Amoebic dysentery is caused by Entamoeba histolytica. Malaria is caused by Plasmodium.

Answer:

there is a nucleus

Second Question (Giardia lamblia's Disease)