The study of microbes
_What are microbes?
Organisms too small to be viewed by the naked eye.
_Why study microbiology?
a. Medical field careers- treating your patients, preventing
spread of diseaseb. Your own health - doctors & nurses
E. coli bacteria
DNA double helix
Fled blood cells
Atomic force microscope 0.1 nm —10 nm
Transmission electron microscope to pm—tDOum
Actual size 7 r
Scanning electron microscope 10 nm —1 mm g
. Adenlne and Thvmlne (as well as Cytosine and Guanlne. not shown here} are nitrogenous bases. or nucleobases.
Phosphate Sugar Idenlnl [A] Thymirte IT] Sugar Phosphate
r—’% (—"ﬁ r—‘A‘Tr—r r—Aﬁ r—’%
Hydrogen band; 3, Ina nucleotide