A woman visits her doctor complaining of stomach pain and is diagnosed as having a stomach ulcer. If the doctor were to assess the microbial composition of the woman's stomach, what might he expect to find?
A. increased levels of Firmicutes
B. increased levels of Bacteroidetes
C. increased levels of Helicobacter pylori
D. increased levels of Picrophilus torridus
E. increased levels of thaumarchaeote
archaeons
C
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What functions does transposase perform during transposition of a DNA transposon? Select all that apply.
_____ Recognizes inverted repeats at the end of the TE. _____ Cleaves the ends of the TE. _____ Moves TE to a new site in the genome. _____ Cleaves target DNA in a staggered manner. _____ Fills in the base pairs at the staggered ends of the target DNA.
The hormone involved in childbirth that participates in a positive feedback loop is
1.estrogen. 2.progesterone. 3.somatostatin. 4.oxytocin. 5.vasopressin.
Which of the following is a unit of energy?
A) calorie B) bond C) watt D) mole E) both A and B
As ATP moves from the matrix of the mitochondrion to the cytoplasm of a cell, how many membranes will it pass?
A. four B. two C. one D. three