Which of the following statements about emerging viruses is false?
A. The stable genome of the SARS virus makes it an unlikely candidate for vaccine development.
B. The emerging virus SARS is a coronavirus.
C. Ebola is an emerging virus of unknown origins that can have a mortality rate in excess of 50%.
D. Hantavirus, which causes a hemorrhagic-type fever, originates in deer mice.
E. Emerging viruses are able to "jump" from one species to another.
Answer: A
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The bodies of arthropods are supported mainly by ____
a. an exoskeleton b. only nonskeletal structures c. a hydrostatic skeleton d. an endoskeleton e. joined exo- and endoskeletons
DNA is made up of many
A. nucleotides. B. RNA molecules. C. proteins. D. amino acids.
The results of the experiment outlined in the accompanying figure clearly demonstrate:a
gene amplification.
b. founder cell development pattern.
c. mosaic development.
d. apoptosis.
e. totipotency.
What is an advantage for using Arabidopsis to study plant development and genetics?
a. The Arabidopsis genome is largely unstudied, and therefore there is a lot that scientists can learn. b. Arabidopsis mutants can be easily induced with chemicals. c. There are no developmental mutants in Arabidopsis, therefore, normal development can be studied easily. d. This plant completes its life cycle in just a few months. e. This plant is a weed of no economic importance