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.
Answer:
D. somewhat small, holding only about seven items at one time.
Answer:
im pretty sure its a petri dish
Explanation:
The cells would be dividing all the time. Hope this helps
Answer:
the correct answer is DNA
