Answser
it migth be B i am not sure
Answer:
(A): DNA and protein
(B): The case for proteins appeared stronger until the 1940s, especially since biochemists had identified them as a class of macromolecules with great heterogeneity and function specificity, essential requirements for the hereditary material. Moreover, little was known about nucleic acids, the physical and chemical properties of which seemed far too uniform to account for the multitude of specific hereditary traits of each organism
(C): Virulent strains are pathogenic (causing disease), whereas non-virulent strains are non-pathogenic (harmless) strains.
The answer is C hope this helps
Mitochondria is the powerhouse of the cell
Because the sun made the balloon shrunk.. here's a example if u leave the balloon outside in the sun it would shrunk because the sun heat wave...
