Concepts of Biology Chapter 3 Section 3.2

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Which of these do all prokaryotes and eukaryotes share? nuclear envelope cell walls organelles plasma membrane

plasma membrane

Describe the structures that are characteristic of a prokaryote cell.

Prokaryotic cells are surrounded by a plasma membrane and have DNA, cytoplasm, and ribosomes, like eukaryotic cells. They also have cell walls and may have a cell capsule. Prokaryotes have a single large chromosome that is not surrounded by a nuclear membrane. Prokaryotes may have flagella or motility, pili for conjugation, and fimbriae for adhesion to surfaces.

eukaryotic cell

a cell that has a membrane-bound nucleus and several other membrane-bound compartments or sacs

organelle

a membrane-bound compartment or sac within a cell

prokaryotic cell

a unicellular organism that lacks a nucleus or any other membrane-bound organelle

A typical prokaryotic cell __________________ compared to a eukaryotic cell. is smaller in size by a factor of 100 is similar in size is smaller in size by a factor of one million is larger in size by a factor of 10

is smaller in size by a factor of 100


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