Which of the following scientists DID NOT disprove spontaneous generation? * Pasteur
Hooke
Redi
Spallanzani

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.

Question 17 (1 point) where does penicillin come from? a. it is a chemical that man invented b. it is a fungus c. it is a toxin made by other bacteria d. it was discovered in archaebacteria