Atp synthases are found in the prokaryotic plasma membrane and in mitochondria and chloroplasts.
(a) propose a hypothesis to account for an evolutionary relationship of these eukaryotic organelles and prokaryotes.
(b) explain how the amino acid sequences of the atp synthases from the different sources could be used to support or refute your hypothesis.

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

What causes darkening of the skin as melanin production increases

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above