What kind of system do annelids have in which blood flows through a continuous system of vessels?
A. Respiratory system
B. Complete digestive system
C. Closed circulatory system
D. Nervous system
E. Open circulatory system
Answer: C
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Match each of the following cellular processes with the phase of the cell cycle in which it occurs
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The Meselson and Stahl experiment provided conclusive evidence for the semiconservative replication of DNA in E. coli. What pattern of bands would occur in a CsCl gradient for conservative replication?
What will be an ideal response?
Ashante is having surgery for a blocked coronary artery. The physician is inserting a catheter with a tiny balloon to open the blocked vessel. What is this procedure called, and what else might the physician do to keep the artery open in the long term?
What will be an ideal response?
In Petunias, immature styles express a high level of RNase (a nuclease that catalyzes the degradation of RNA). What type of SI would this affect, and how?
A. It will stop gametophytic SI. B. It will have no effect. C. It will enhance gametophytic SI. D. It will enhance sporophytic SI. E. It will stop sporophytic SI.