Fred has been diagnosed with a disease that causes him to forget that his relatives have been to see him. What parts of his brain are likely affected, given this information?
A) hippocampus and amygdala
B) medulla oblongata and thalamus
C) corpus callosum and pons
D) cerebellum and midbrain
A
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Along with the respiratory system, which system has the responsibility of supplying oxygen and eliminating carbon dioxide?
You are studying a virus that spends long periods of time latent within a host’s cells but causes massive tissue damage during its active periods. You have found that the surface molecules of this virus mutate quite frequently, but the proteins it requires to reproduce are both unique to this virus and stable across infections. What type of treatment would you recommend for this virus?
a. live viral vaccine b. killed viral vaccine c. antiviral drugs d. chelation therapy
Sequencing DNA from different organisms has been a breakthrough for phylogenetics because:
a. we can now build heat-tolerant animals. b. we now have a method to determine the relatedness of organisms that leave no fossils. c. it has reduced the impact of antibiotic resistance in bacteria. d. we can now recreate genomes from the past. e. All of the above are correct.
Mutations are a source of genetic ________ by which evolutionary change is possible
A) reproduction B) constancy C) stability D) variability