The correct answer is: [B]:
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"it is based on the idea that all the present continents were one supercontinent".
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Answer:
Cyanobacteria would be the first living thing on earth.
Explanation:
This would make sense because bacteria is always lurking somewhere even if it isn't in any organism. Bacteria can live in rocks or sand. So it would make sense that some type of bacteria would be the oldest thing.
Bacteria could be also one of the last living thing on earth as well.
If you have any questions feel free to ask in the comments - Mark
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A bond formed by the electrical attraction between two oppositely charged ions is a(n) ionic bond.
Answer:
All of the other answer choices suggest the presence of a multipass transmembrane protein.
Explanation:
The primary sequence contains stretches of polar and nonpolar amino acids, suggesting an amphipathic design.
This one could be, because of the presence of polar an nonpolar aminoacids. The phospholipids membrane have the same construction.
The protein has windows of the primary sequence with positive hydropathy values separated by windows of the primary sequence with negative hydropathy values.
The same here, having pieces of positive and negative hidropathy can be a sign of transmembrane protein.
The protein isolates with the membrane fraction of the cell rather than the cytoplasmic fraction of the cell.
This is discribing you a transmembrane protein
