Cell Structure and Compartments
Microtubules, motor proteins, and actin filaments are all part of

the rough ER (endoplasmic reticulum) in prokaryotic cells
the mechanism of photosynthesis that occurs in chloroplasts
the cytoskeleton of eukaryotic cells
the process that moves small molecules across cell membranes

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

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

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

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

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

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