How many land eco-regions have been
identified by the World Wildlife Fund as top
priorities for conservation efforts?
a. 123
b. 167
c. 456
d. 579
e. 867
E
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Which of the following characteristics of bacterial transcription is not true of eukaryotic transcription?
A. Specific factors are used to direct the polymerase to bind a specific type of promoter sequence. B. Abortive transcripts are formed prior to the elongation phase. C. RNA polymerase interacts with a single transcription factor during initiation. D. RNA polymerase interacts with DNA upstream from the coding sequence in the template. E. Transcription has distinct initiation, elongation, and termination phases.
In relation to functional groups, what is an R-group?
a. An R-group is an abbreviation that denotes the addition of a phosphate to any functional group. b. An R-group is an abbreviation used to show any group to which the functional group is attached, usually at a carbon or hydrogen atom. c. An R-group indicates that the functional group was formed through dehydration synthesis. d. An R-group is an abbreviation for an acetyl group in inorganic chemistry.
The amateur scientist (Koch/Leeuwenhoek/Pasteur) made his own microscopes and first reported the existence of microbes
What will be an ideal response?
The outermost layer of the digestive tract is the:
A) muscularis externa. B) submucosa. C) mucosa. D) serosa.