Which of the following diseases is (are) caused by prions?
A. Mad cow disease
B. Kuru and Creutzfeldt-Jakob Disease
C. Scrapie
D. All of the choices are correct.
Answer: D
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The single atom you would choose to remove from living organisms in order to remove the highest percentage of atoms would be:
A. Oxygen. B. Nitrogen. C. Hydrogen. D. Carbon.
A radial nervous system is characteristic of the sea star
____________________ Indicate whether the statement is true or false.
Which feature would have given the jawed fish an evolutionary advantage over the jawless fish when it came time to hunt for food?
A. The evolution of an ectothermic lifestyle so they could regulate their body temperature based upon the environment. B. A skin that is nonscaly that also allows for an increased respiration ability. C. Gills that would increase the efficiency of their breathing. D. A cartilaginous endoskeleton that would provide for more power while swimming. E. The evolution of jaws from the gill slits that would enable them to bite more efficiently.
What type of blood vessel is solely responsible for exchange between the blood and the interstitial fluid?
A) artery B) arteriole C) capillary D) venule