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Essential Cell Biology 5th edition

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PANEL 1–2 CELL ARCHITECTURE 25

ANIMAL CELL

microtubule

centrosome with

pair of centrioles

chromatin (DNA)

nuclear pore

extracellular matrix

vesicles

lysosome

mitochondrion

actin

filaments

nucleolus

nucleus

5 µm

endoplasmic

reticulum

peroxisome

ribosomes in

cytosol

Golgi

apparatus

intermediate

filaments

plasma

membrane

Golgi

apparatus

nucleolus

mitochondrion

flagellum

ribosomes in

cytosol

Three cell types are drawn

here in a more realistic

manner than in the schematic

drawing in Figure 1–24.

The animal cell drawing is

based on a fibroblast, a cell

that inhabits connective tissue

and deposits extracellular

matrix. A micrograph of a

living fibroblast is shown in

Figure 1–7A. The plant cell

drawing is typical of a young

leaf cell. The bacterium shown

is rod-shaped and has a single

flagellum for motility. A

comparison of the scale bars

reveals the bacterium’s

relatively small size.

chromatin

(DNA)

nuclear

pore

cell wall

microtubule

vacuole

(fluid-filled)

outer membrane

peroxisome

DNA

plasma membrane

chloroplast

cell wall

ribosomes

in cytosol

BACTERIAL CELL

PLANT CELL

1 µm

actin filaments

lysosome

5 µm

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