In some cultures, parts of the central nervous system (e.g., brains) of cattle are popular foods. Predict the issues that might arise from this practice
What will be an ideal response?
According to the chapter, transmissible spongiform encephalopathies are associated with the brains of certain livestock, including cattle. The condition arises from prions, and the prion responsible for mad cow disease is thought to cause one form of Creutzfeldt-Jakob disease in humans.
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For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25 degrees Celsius. What can you conclude about this reaction?
A. It is exergonic B. It is endergonic C. it is a redox reaction D. It is being catalyzed by an enzyme
Bacteria and Archaea
a. belong to the same domain. b. have similar cellular structures. c. have cell walls that are structurally similar to plant cell walls. d. are more closely related to each other than to eukaryotes.
Which of the following is mismatched?
A. endoskeleton - echinoderms B. hydraulic skeleton - earthworm C. exoskeleton - vertebrates D. exoskeleton - crustaceans E. hydraulic skeleton - jellyfish
Which of the following taxa is least related to the others?
a. Unikonta b. Nucleariids c. Cercozoans d. Choanoflagellates e. Fungi