Its a solid because it would melt
DescriptionBiotic components, or biotic factors, can be described as any living component that affects another organism or shapes the ecosystem. So the answer would be 1 an 2
Diffusion is one form of passive transport that doesn't require the expenditure of cellular energy. A molecule can diffuse passively through the cell membrane if it's lipid-soluble, uncharged, and very small, or if a carrier molecule can assist it. ... The assisted process is known as facilitated diffusion.
Got this off google but still hope it helps :)
To identify the host cell that has taken up the gene of interest