Which of the following triggers the RNAi pathway?
A) mRNA
B) rRNA
C) tRNA
D) shRNA
E) snRNA
D
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If 20% of nucleotides in the DNA of a particular organism contain thymine, estimate the percentage of cytosine that is present in the DNA.
A. 40% B. 80% C. 20% D. 15% E. 30%
Match each scientist or group of scientists on the left with the appropriate statement to the right.
A) hereditary factors B) pollen grain C) chromosome theory of heredity D) dog saliva E) "ferments" of yeast F) transformation G) DNA double helix H) embryonic plant I) transfer RNA J) embryonic bacteria K) fruit fly L) transcription M) translation N) Calvin-Benson cycle O) "one gene—one enzyme" P) oral bacteria Q) urea 1) Gregor Mendel 2) Walter Sutton 3) Matthias Schleiden 4) Oswald Avery, Colin MacLeod, and Maclyn McCarty 5) George Beadle and Edward Tatum 6) James Watson and Francis Crick 7) Thomas Hunt Morgan 8) Friedrich Wöhler 9) Louis Pasteur
During fermentation, ATP can be produced per glucose, compared with theoretical a yield of by aerobic respiration.
A. 2; 6 B. 30; 6 C. 6; 30 D. 2; 36 E. 36; 2
Which statement is LEAST characteristic of proteobacteria?
a. They live only inside plants. b. Some are photoautotrophs. c. Some are chemoautotrophs. d. Some are chemoheterotrophs. e. They are the most diverse group of bacteria.