All BUT one scientist was pivotal in making some type of discovery that led to our understanding of the basic nature of cells. That scientist is A) Anton Von Leeuwenhoek. B) Mattias Schleiden. C) Theodor Schwann. D) Hans Krebs.

i think it is dna, i'm not totally sure but i think it might be.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive