Which part of the respiratory system is an air tube held open by a series of C-shaped cartilaginous rings?
A. trachea
B. bronchioles
C. pharynx
D. larynx
Answer: A
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Gram-positive bacteria have a structurally and chemically more complex cell wall than gram-negative bacteria.
Answer the following statement true (T) or false (F)
Which of the following synthesis short segments of RNA?
A) helicase B) DNA polymerase III C) ligase D) DNA polymerase I E) primase
Transcription is initiated when
A. initiation factors assemble ribosomal subunits, mRNA, and initiator tRNA B. RNA polymerase comes to a stop sequence C. RNA polymerase binds to a region of DNA called the promoter D. new nucleotides are added to an existing strand of nucleotides
On mRNA, the specific three-nucleotide sequence (AUG) to which an initiator tRNA molecule binds, starting translation of genetic information
What will be an ideal response?