For some virulent phages, fragments of the host DNA may be included in the heads as the viral particles assemble,
providing the basis for ____.
a. transformation
b. transmutation
c. metabolism
d. specific transduction
e. generalized transduction
ANSWER: e
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Flatworms can reproduce:
a. asexually. b. sexually. c. by reciprocal copulation. d. all of the above
A beaker contains two solutions of salt dissolved in water. The two solutions have different concentrations (measured by molarity, M) and are separated by a membrane that is permeable to salt. Side A has 0.2 M of Salt and Side B has 0.9 M of salt. Which of the following statements is TRUE?
a) There will be a net movement of salt from side A to side B b) There will be no net movement of salt c) There will be a net movement of salt from side B to side A
Which phylum of the Kingdom Protozoa were you least likely to observe in pond water?
A) Flagellates B) Amoebas C) Ciliates D) Apicomplexans
Vestigial structures _________________.
a. are essential for an organism to live b. have no known function c. cause reproductive isolation d. cause sympatric speciation