Treatment of Clostridium difficile with fecal material from a healthy donor results in
a. 90% cure rate with no relapse.
b. 90% cure rate with possible relapse.
c. 25% cure rate with no relapse.
d. 25% cure rate with possible relapse.
Answer: A
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The percentage of twins being born has increased in the past 20 years because of:
a. the increased use of fertility inducing drugs. b. increases in hospital care. c. the desire of more couples to have twins. d. the increased use of thalidomide. e. the increased incidence of German measles.
Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.
Answer the following statement true (T) or false (F)
Dormant, thick-walled resting cells of cyanobacteria that are resistant to desiccation are called ________.
A. akinetes B. baeocytes C. thylakoids D. hormogonia
Gastrulation is brought about by an inward folding of the blastula.
Answer the following statement true (T) or false (F)