Biology Now, 2e

Figure 4.8

Prokaryotic and eukaryotic cells

A prokaryotic cell, like all cells, contains DNA, cytoplasm, ribosomes, and a plasma membrane. Many prokaryotes also have a

cell wall that serves as a kind of exoskeleton. To enable movement, some bacteria possess a flagellum, or several flagella. The

components of eukaryotic cells are described in the text and in Figure 4.9. M

Q1: What structures do prokaryotic and eukaryotic cells have in common?

Q2: What cellular processes occur in both prokaryotic and eukaryotic cells?

Q3: Both plants and animals are eukaryotes, but there are differences in their cellular structure. What are those differences?

DNA

Lysosome

Mitochondrion

Golgi

apparatus

Cytoskeleton

Nucleus

Large

central

vacuole

Ribosome

Rough endoplasmic

reticulum

(rough ER)

Smooth

endoplasmic

reticulum

(smooth ER)

Plasma membrane

Chloroplast

Small vacuole

Cell wall

Plant cell Animal cell

Prokaryote

Eukaryote

DNA

(nucleoid)

Bacterial

flagellum

Cytoplasm

Ribsomes

Plasma

membrane

Cell wall