(Question)
Q: Rudolf virchow developed the hypothesis that cells only come from other cells in what year? Choices: - 1898 - 1868 - 1848 - 1858 A:
(Answer)
1858

(Question)
Q: Where are protons and neutrons located? Choices: - radius - electron shell - epidermis - nucleus A:
(Answer)
nucleus

(Question)
Q: Like all tetrapods except birds and mammals, frogs possess a heart with what structure? Choices: - One Chamber - four chambers - eight chambers - three chambers A:
(Answer)
three chambers