A set of three consecutive bases in mRNA is known as a(n) ____
a. doublet
b. codon
c. anti-codon
d. codex
e. tri-codon
ANSWER: b
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After replication of a DNA molecule is completed, two molecules are present: the original DNA and a
newly synthesized DNA. Indicate whether the statement is true or false.
A small amount of DNA was located at a crime scene. Which one of the following techniques is most likely to be used to amplify the DNA so it can be identified more accurately?
A) genetic engineering B) use of DNA ligase to recombine the pieces of DNA C) gene therapy D) DNA sequencing E) polymerase chain reaction
All of the following are correctly matched "tissue system: function" except:
A. Ground tissue: anchors plant in the soil B. Dermal tissue: protects plant from pathogens and dessication C. Vascular tissue: moves molecules throughout plant's body D. All of these are correctly matched
What parts of the transformation procedure are done to increase the competence of the bacterial cells?
a. treatment with calcium b. brief heat shock c. Using a microcentrifuge d. Adding LB to the tube