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

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

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

reduces overall cell size
makes each compartment nutritionally independent of all others
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
Lysosomes are specialized vesicles in __________ that contain digestive enzymes for the breakdown of food. A related organalle known as a vacuole, which is found in __________ , also contains enzymes but in addition may act as a storage organelle for nutrients or water.

animals and plants; fungi
plants; animals and fungi
plants and fungi; animals
animals; plants and fungi

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