You are attempting to synthesize rRNA in a test tube using DNA isolated from mouse cells. In addition to the template DNA, ribonucleotides, and the necessary transcription factors, you should also add ________ to the test tube.
A. RNA polymerase III
B. RNA polymerase II
C. poly-A polymerase
D. RNA polymerase I
Answer: D
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DNA was first described by _____ in 1869
a. Johannes Miescher b. Frederick Griffith c. Oswald Avery and Macly McCarty d. Alfred Hershey and Martha Chase e. Maurice Wilkins
Which event occurs during the elongation stage?
a. Peptide bonds form. b. Free amino acids bind to the mRNA binding site. c. Anticodons bind to complementary codons.
d. A stop codon enters the ribosome. e. Peptide bonds form, and anticodons bind to complementary codons.
Most monocots have numerous __________ roots
arising from the stem. a. adventitious b. primary c. epidermal d. secondary e. tap
When a cold ocean current brings rich nutrients to the surface and influences the climate of the region, it is called a(n)
A. upwelling. B. lake effect. C. guano. D. profundal zone. E. monsoon.