Identifying Organelles from an Electron Micrographmsjoconnor.weebly.com/uploads/2/3/9/1/23919811/___1… ·  · 2014-09-19The electron micrograph displayed below illustrates many

Identifying Organelles from an

Electron Micrograph

ELECTRON MICROGRAPH

OF CELL NUCLEUS Courtesy of Electron

Microscopy Unit

University of Lancaster

mitochondrion

nuclear envelope

nucleoplasm

nucleolus

chromatin

Chromatin, mitochondrion, nucleolus,

nuclear pore, nuclear envelope

Endoplasmic reticulum ELECTRON MICROGRAPH OF

ROUGH ENDOPLASMIC RETICULUM

Ribosome Cavity of cisterna

Courtesy of Dr. Julian

Thorpe – EM & FACS Lab,

Biological Sciences

University Of Sussex

ELECTRON MICROGRAPH

OF GOLGI APPARATUS

Golgi

vesicles

stacked

membranes

ELECTRON MICROGRAPH

OF MITOCHONDRION Courtesy of Electron

Microscopy Unit

University of Lancaster

endoplasmic

reticulum fluid matrix cristae outer

membrane

ER, cristae, fluid matrix, ribosome,

outer membrane

Courtesy of Dr. Julian Thorpe – EM & FACS Lab,

Biological Sciences University Of Sussex

The electron micrograph displayed below illustrates many of the

plant cell characteristics discussed

The cell wall, large central vacuole and chloroplasts are clearly visible

Also visible

is the clearly

defined nucleus

containing

chromatin

Nucleus

Chromatin

The vacuole

in this mature

plant cell from

a leaf is large,

and occupies

about 80% of

the cell volume

The photograph shown below details chloroplast structure

as viewed with a transmission electron microscope

Courtesy of Dr. Julian Thorpe – EM & FACS Lab,

Biological Sciences University Of Sussex

A single

Granum

Chloroplast envelope visible as two membranes Stroma containing numerous

small ribosomes

Lamellae connecting

different grana

Lipid

droplets