Anemones have no
A) ectoderm. B) endoderm. C) mesoderm.
C
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Which of the following processes is central to the initiation of transcription?
A) binding of sigma to the promoter region B) formation of a phosphodiester bond in the elongating RNA strand C) binding of DNA polymerase to the promoter region D) formation of a DNA primer
Gene therapy viruses are usually constructed from which type of virus?
A) adenoviruses B) cytomegaloviruses C) polyomaviruses D) poxviruses
Xenotransplantation refers to
a. the substitution of one organ for another. b. the transfer of an organ from one individual to another individual of the same species. c. transplantation of an organ from an individual of one species to an individual of another species. d. transplantation of an organ to augment the function of an otherwise healthy organ. e. none of these.
If citrate levels are high in the cell, but ATP levels are low, what do you think will happen in the cell?
A. Glycolysis and the Krebs cycle will both be inhibited, thus under these conditions there will be no mechanism to generate ATP. B. The electron transport chain will be inhibited, causing a build-up of NADH and FADH2. This will inhibit the Krebs cycle, but in the presence of glucose, glycolysis will still run coupled with fermentation to regenerate NAD+. C. In the presence of glucose, glycolysis will run to generate energy for the cell, but the Krebs cycle will be inhibited. D. Glycolysis will be inhibited, but the Krebs cycle will be functional, allowing it to be utilized to breakdown acetyl-CoA generated from beta-oxidation.