Biology
Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

Theodore Schwann
Robert Brown
Rudolf Virchow
Robert Hooke

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Biology
Which statement best describes Arteries?

They have thin walls and transport blood toward the heart
They have thick walls and transport blood away from the heart
They have thick walls and transport blood toward the heart
They have thin walls and transport blood away from the heart

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