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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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?
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)