Which of the following is the best definition of a prokaryote? A. A one-celled organism that does not have a cell wall
B. A one-celled organism that does not have a membrane-bound
nucleus
C. An organism whose cells each have a cell wall
D. An organism whose cells each contain a membrane-bound
nucleus

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis