Cell Structure and Compartments
An organism's first line of defense against attack by an invader such as a virus or bacterium is usually

its body wall
a nonspecific immune response
to flee or hide
a specific immune response

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Cell Structure and Compartments
Which of the following statements about prokaryotes is false?

Prokaryotic cells are much smaller than most eukaryotic cells
The substance known as cytosol is found within the bacterial nucleus
Ancient prokaryotes may have given rise to some eukaryotic organelles
Prokaryotic cells concentrate important materials for the cells survival

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