<p><span style="font-size: 16px;">Bacteria and Archaea both <span style="background-color: #ccffff;">prokaryotes</span>. Remember that prokaryotes are single-celled organisms that do not have a distinct nucleus with a membrane or other specialized organelles.</span></p>
<p><span style="font-size: 16px;">Organisms in <span style="background-color: #ccffff;">Bacteria</span> and <span style="background-color: #ccffff;">Archaea</span> domains are classified based on their need for oxygen.&nbsp;</span></p>
<ul>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">obligate anaerobes</span> - die in the presence of oxygen</span></li>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">obligate aerobes</span> - die without oxygen</span></li>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">facultative aerobes</span> - can live with or without oxygen</span></li>
</ul>
<p><span style="font-size: 16px; line-height: 22.4px;">Bacteria - are a very diverse group of organisms, they live in almost every environment imaginable! They are generally are found in three shapes</span></p>
<ul>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">rod-shaped</span> (bacilli)</span></li>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">spiral</span> (spirochetes)</span></li>
<li><span style="font-size: 16px; line-height: 22.4px;"><span style="background-color: #ccffff;">spherical</span> (cocci)</span></li>
</ul>
<p><span style="font-size: 16px; line-height: 22.4px;">Read more about Bacteria, online at <a href="http://www.microbiologyonline.org.uk/about-microbiology/introducing-microbes/bacteria">Microbiology Online</a>, be sure to read the entire page, and take notes.&nbsp;</span></p>
<p><span style="font-size: 16px; line-height: 22.4px;">Archaea are similar to bacteria in that they are prokaryotes, but they live in very extreme environments. You can read a short page on Archaea online at <a href="http://www.microbiologyonline.org.uk/about-microbiology/introducing-microbes/archaea">Microbiology Online</a>.&nbsp;</span></p>
<p><span style="font-size: 16px; line-height: 22.4px;">Then watch the Crash course video, <a href="https://youtu.be/vAR47-g6tlA">Old &amp; Odd: Archaea, Bacteria, &amp; Protists</a>&nbsp;</span></p>
<p><iframe src="https://www.youtube.com/embed/vAR47-g6tlA?wmode=opaque" width="560" height="315" frameborder="0" allowfullscreen=""></iframe></p>