Which of the following is essential in PCR?
A) DNA polymerase
B) antisense RNAs
C) reverse transcriptase
D) DNA primers
E) both DNA primers and DNA polymerase
E
Bloom's Taxonomy: Comprehension
Section: Techniques of Recombinant DNA Technology
Learning Outcome: 8.12
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A cell expends energy when moving substances against a gradient during ____
a. symport b. passive diffusion c. active transport d. facilitated diffusion e. antiport
When e-cadherin expression ___ this increases invasiveness of tumor cells.
a. increased b. decreased c. stays the same d. none of the above
Which of the following is an example of hydrogen bonding?
A) The bond between O of one water molecule and H of a separate water molecule B) The bond between O of one water molecule and O of a separate water molecule C) The bond between H of one water molecule and H of a separate water molecule D) The bond between the H of a water molecule and H of a hydrogen molecule E) The bond between O and H in a single molecule of water
Which of the following is NOT true of DNA-binding proteins?
a. Many are dimers that combine with two sites on the DNA. b. Regulatory proteins often bind inverted repeats on DNA. c. A leucine zipper is a common domain to maintain proper conformation. d. Most bind to DNA in a nonspecific manner.