When E. coli is lysed:
A. circular chromosomal DNA is released.
B. circular plasmid DNA is released.
C. both circular chromosomal and circular plasmid DNA are released.
D. chromosomal DNA remains within the cell wall while most cellular contents are released.
E. both circular chromosomal and circular plasmid DNA remain within the cell wall while most cellular contents are released.
C
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Cnidarians that exhibit only the polyp stage in their life cycle are:
a. hydrozoans. b. scyphozoans. c. cubozoans. d. anthozoans. e. bryozoans.
Which of the following statements about Kingdom Animalia is/are FALSE?
a. Diversification of animals is due in large part to motility. b. Diversification of animals is due in large part to predator prey interactions. c. Diversification of animals is marked by the evolution of specialized tissues and organ systems as well as complex behaviors. d. Vertebrates encompass only a small fraction of total animal diversity. e. All of these are true statements.
Four of the five choices below are innate
immune responses. Select the EXCEPTION.
a. antibody production b. phagocytosis c. complement action d. inflammation e. fever
The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor
a. estrogen b. oxytocin c. cortisol
d. progesterone e. prolactin