A) protein synthesis.
B) transcriptional initiation.
C) protein folding.
D) protein secretion.

A) Plasmids are always small, linear pieces of DNA.
B) Plasmids are composed of single-stranded DNA.
C) Plasmids contain genes that are NOT essential for cellular growth and replication.
D) Plasmids carry unimportant genes that are of little significance for the ecology and metabolism of an organism.

A) function to transfer ribonucleotides to RNA polymerase during transcription.
B) function to transfer the correct amino acids to the ribosome during translation.
C) contain codons that bind to ribosomes during translation.
D) are only present in the nucleus or eukaryotes.