Most E. coli antisense RNAs work with a protein called ________ to regulate their target mRNAs.
A. Hfq
B. MicF
C. CAP
D. None of the choices are correct.
Answer: A
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What happens to the carbon dioxide that is produced during the 2nd stage of aerobic respiration? a. It diffuses out of the cell
b. It is stored in the cell. c. It is converted into sugars. d. It is actively transported out of the cell. e. It moves to stage 3 and enters the Krebs Cycle.
Albinism results from a recessive allele. Which of the following describes the expected offspring from a normally pigmented male (who had an albino father) and an albino wife?
A) All albino B) 50% normal; 50% albino C) All normal D) 75% normal; 25% albino E) 75% albino; 25% normal
Denitrifying Bacteria and Archaea are chemoorganotrophs that grow by anaerobic respiration using ________ and producing ________
a. nitrate (NO3–) or nitrite (NO2–) / dinitrogen gas (N2) or nitrous oxide (NO) b. dinitrogen gas (N2) or nitrous oxide (NO) / nitrate (NO3–) or nitrite (NO2–) c. dinitrogen gas (N2) or nitrous oxide (NO) / ammonia (NH3) or CO2 d. nitrate (NO3–) or nitrite (NO2–) / ammonia (NH3) or water
Speciation is the evolution of reproductive isolation between two populations. How could coevolution be-tween Glochidion trees and Epicephala moths lead to speciation in Glochidion?
a. Genetic drift in allopatric populations changes pollen properties so that cross-pollination by moths upon secondary contact no longer results in seeds. b. Epicephala moths adapt physiologically to different flight temperatures in two allopatric habi-tats and will die when switching habitats. c. Epicephala moths in different habitats adapt to different changes in the smell of flowers. d. None of the above.