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.
Most animals in Animalia have backbones, but not all.
The correct answer would be C, because all organisms in Animalia are heterotrophs which means that they depend on other organisms (like animals and plants) for food.
I’m looking for this too, ain’t no way your in collage learning this.
The correct answer is:
<span>d. primates, haplorhini, anthropoidea, catarrhini, hominoidea, hominidea, homininae, hominine, homo, and sapiens.
</span>The classification levels of humans from order to species:
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Mammalia
Subclass: Theria
Infraclass: Eutheria
Order: Primates
Suborder: Anthropoidea
Superfamily: Hominoidea
Family: Hominidae
Genus: Homo
Species: sapiens
You have a typo. I think you mean ectotherms and endotherms. Ectotherms, commonly call cold-blooded, cannot regulate body temps, while endotherms, commonly called warm-bloods, can.
