Biologists use an electron microscope to study cells in even greater detail. A beam of electrons is passed through the specimen. This forms a hugely magnified image (× 1000000) called a micrograph. Micrographs display in black and white.
Two even smaller organelles that cannot be viewed with a light microscope can be seen using an electron microscope:
• mitochondria • ribosomes
Organelle
Mitochondria Ribosomes
Description
Release energy through respiration Make proteins, including enzymes
) Fig. 3.11 An electron microscope
: Fig. 3.12 Micrograph of an animal cell ? TEST TUBE
10. Name the two organelles that can be seen with an electron microscope but not with a light microscope.