Which of the following domains include organisms that have a nucleus and
other membrane-bound organelles?
o
a. archaea only
o
b. eukarya only
o
c. archaea and eukarya
o
d. bacteria only
submit

The correct option is B. Eukarya only

Explanation:

Bacteria can be described as prokaryotic organisms that do not possess a nucleus. Their genetic material is generally present in the cytoplasm of the cell in a region called nucleoid. Some extra genetic material is found in them in the form of plasmids. Hence, option D is not correct.

The domain, Archae, contains prokaryotes and they lack a nucleus. Hence, option A and C are not correct.

Eukaryotes are multicellular organisms which contain a nucleus and other membrane-bound organelles. Hence, option B is correct.

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answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.