Gee's arm was cut during an industrial accident. The blood was pouring from the wound in spurts. Which type of vessel was severed?
A) vein B) artery C) lymphatic vessel D) capillary
Answer: B
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Which group of plants contains the tallest and oldest trees on Earth?
A. cycads B. ginkos C. conifers D. gnetophytes E. angiosperms
The diagram below shows inbreeding between _________ which, over time, could lower the fitness of the population. This lowering of fitness because of inbreeding is called _________.
A. siblings; inbreeding depression
B. cousins; inbreeding depression
C. siblings; genetic drift
D. cousins; genetic drift
E. siblings; sexual selection
Deserts typically form at __________ latitude where
__________. a. 30 degrees; warm dry air descends b. 60 degrees; warm dry air descends c. 0 degrees; there is intense sunlight d. 60 degrees; warm dry air ascends e. 75 degrees; rising air picks up moisture
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?