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

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

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Cell Structure and Compartments
Eukaryotic cells are more efficient than prokaryotes because their internal compartmentalization

makes each compartment nutritionally independent of all others
reduces overall cell size
allows for specialization through merging of different tasks
allows for specialization through the subdivision of particular tasks

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Cell Structure and Compartments
What do dystrophin, utrophin, actin, and tubulin have to do with eukaryotic cell structure and function?

They are components in the reactions of photosynthesis
They all participate in the degradation of large amounts of ATP
They are all embedded proteins in plasma membranes
They all participate in the production of large amounts of ATP

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