Answer: B. They are a first line of defense that can begin killing pathogens immediately.
Explanation:
B-lymphocytes are not the first line of defense. On the contrary, innate immune cells such as basophils, dendritic cells, eosinophils, Langerhans cells, mast cells are the body's first line of defence.
I would think it would be a worm virus considering that this is a biology question.
The correct answer is C. all organisms in the domain have eukaryotic cells.
The Eukarya differ from Archaea and Bacteria in that their cells are eukaryotc, meaning they contain a membrane enclosed nucleus and other membrane enclosed organelles. Archaea and bacteria have prokaryotic cells, meaning their cells do not contain a membrane enclosed nucleus or other membrane enclosed organelles.
