DNA ligase links two __________ DNA fragments by __________ bonds
a. complementary; hydrogen
b. circular; covalent
c. palindromic; covalent
d. linear; covalent
e. linear; hydrogen
D
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A. hot geyser springs B. deep oceans C. acid pools D. arid, desert soil E. salt lakes
Which of the following do NOT bind to the promoter sequence during regulation?
A) activators B) inducers C) repressors D) activators, inducers, and repressors
A patient has been diagnosed with a major cancer, which has spread. Which treatment would be the best choice?
1.surgical removal 2.monoclonal antibodies 3.chemotherapy 4.radiation therapy
A nerve impulse moves along a neuron as:
a. sodium moves into the cell and potassium moves out of the cell. b. sodium binds to potassium. c. sodium and potassium are pulled apart. d. acetylcholine moves along the nerve fiber. e. calcium exits the dendrites.