(Question)
Q: What are the two types of cells? Choices: - mammal and plant - bacteria and eukaryotes - animal and bacteria - prokaryotes and eukaryotes A:
(Answer)
prokaryotes and eukaryotes

(Question)
Q: The minimum amount necessary for self-sustained fission of a given nuclide is called what? Choices: - its half-life - its molar mass - its activation energy - its critical mass A:
(Answer)
its critical mass

(Question)
Q: Since warmer molecules have more energy, they are more what? Choices: - inactive - dense - abundant - active A:
(Answer)
active