Evolutionary biologists theorize that
the first living organisms on earth are single-celled prokaryotes. The two
prokaryotic domains are archaea and bacteria. Bacteria varies from
disease-causing pathogens to valuable photo synthesizers and symbionts while archaea
are diverse, but not pathogenic and they have the characteristics to live in
extreme environments. Moreover, the presence of prokaryotes is highly
dominating for they can be found everywhere even inside our bodies but they are
difficult to count, classify or detect.
Answer:
Explanation:
There are basically four different classes of amino acids determined by different side chains: 1. non-polar and neutral, 2. polar and neutral, 3. acidic and polar, 4. basic and polar.
sorry if this doesn't help
Answer:
D
Explanation:
For more info, try specifically researching about synapse junctions