In which of the following steps of transcription is the C-terminal domain of RNA polymerase II first phosphorylated?
A. assembly of the preinitiation complex
B. initiation
C. elongation
D. termination complex formation
E. after termination
B
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Which of these factors would have the least effect on heat transfer processes in animals?
A. internal insulation such as blubber B. bone density C. difference between body temperature and ambient temperature D. external insulation such as feathers or fur E. surface area of the body
During the electron transport process, protons and electrons become physically separated in the cell membrane
Indicate whether the statement is true or false.
Which hormone is used to promote ripening of fruit that has been picked green?
1.auxins 2.cytokinins 3.ethylene 4.gibberellins
The Red Queen hypothesis may explain
a. why asexual reproduction is easier and faster than sexual reproduction. b. why aphids seasonally alternate parthenogenesis with sexual reproduction. c. the existence of all-female species of animals. d. the connection between species interactions and sexual reproduction. e. why meiosis and fertilization alternate during sexual reproduction.