A sequence of bases located upstream from a reference point occurs towards the:a
3? end of the amino acid sequence.
b. 5? end of the mRNA sequence.
c. 3? end of the mRNA sequence.
d. 5? end of the transcribed DNA strand.
e. carboxyl end of the amino acid sequence.
b
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Francisella tularensis is transmitted to humans by
A. biting arthropods. B. inhalation of aerosols. C. direct contact with infected tissue. D. All of the choices are correct.
Which of the following functions does an
arthropod’s exoskeleton serve?
a. protection from predators b. attachment points for muscles c. water conservation d. body weight support e. it serves all of these functions
A polysome is
a. one of the units of a ribosome. b. the nuclear organelle that synthesizes RNA. c. an organelle that functions similarly to a ribosome during meiosis. d. the two units of a ribosome considered together. e. an mRNA molecule with several ribosomes attached.
The major site of gas exchange in the lungs is the ____
a. bronchi b. bronchioles c. larynx d. alveoli e. respiratory bronchioles