Answer:
c. to account for two major and distinct prokaryotic groups in addition to eukaryotes.
Explanation:
Microbiologist Carl Woese compared the ribosomal RNA sequence of the small subunit of RNA. Various organisms have structurally different small subunit of the ribosomes. According to Woese the molecular composition of rRNA in closely related organisms should be more similar than in distantly related organisms. He analyzed the 16S rRNA of various organisms and observed that there are two distinct groups of prokaryotes. He divided the prokaryotes among two domains: Bacteria and Archaea. He placed all the eukaryotes in the domain Eukarya.
Answer:
D
Explanation:
Prokaryotic are simple cells and do not have nucleus.
I would recommend b. cause the moon does help tides
the process of DNA replication occurs just before the cell division i.e. mitosis. DNA synthesis happens in S-phase i.e. synthesis phase of interphase where cell division preparation happens.
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Answer:
Ice cream isn't exactly a meal but when you go through the process of making it, it starts out as a liquid then becomes solid. Most people who've made ice cream as a kid have done the experiment with 2 Ziploc bags, kosher salt, heavy cream, vanilla, sugar, and milk. And of course the ice. You begin to get a solidified figure once you mix everything in the first bag then surround that bag with another bag filled with the ice and salt and shake. So this would count as physical change.
If you cook a steak it'd go through a chemical change. The proteins in the meat begin to break down due to the heat in a skillet, grill, pot, etc. This meat also goes through a physical change. The color changes and so does the texture. (Not that I've ever had raw meat. Bleh!)
Hope this helped!
