Star produce different spectra mainly because of differences in their chemical composition and

Stars produce different spectra mainly because of differences in their chemical composition and temperature. Star is the large shining sphere of hot gas. The main-sequence stars are made chiefly of hydrogen and a smaller amount of helium. The differences in chemical compositions of stars make them to produce more subtle effects and the appearance of each spectrum produced by the star relies mainly on the star’s temperature.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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