One of the most unusual aspects of virus particles is the absence of all organelles and other smaller structures. whereas cells have many kinds of organelles, viruses consist of only two parts: a nucleic acid core made of dna or rna, and a tough, potective protein shell. which name is given to this tough shell made of protein? a) capsid b) acrosome c) endospore d) lytic layer

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

In a cladogram' when does a group of organisms branch off

Which of the following human activities resulted in the growth of the north american deer population?