In the pulmonary circuit, veins carry oxygen-________ blood, and in the systemic circuit, veins carry oxygen-________ blood.
A. poor; rich
B. rich; rich
C. poor; poor
D. rich; poor
Answer: D
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Fluzone is a brand name for a very commonly given influenza vaccine. The vaccine is prepared by first harvesting flu viruses in chicken embryos and then breaking apart virus particles into protein subunits, thereby inactivating the virus. Your friend refuses to get the vaccine. Which of these statements is the only valid reason for her not to get the flu vaccine?
A. She could die from the vaccine. B. She could pass the virus onto her baby, causing the child to become autistic. C. She could catch the flu from the inactivated vaccine. D. She is allergic to eggs.
Of the following codons, which encodes a normal translational stop?
A) UUU B) AUG C) UAG D) AAA E) AGG
Which of the following is evidence that the
continents are not static?
a. the jigsaw puzzle fit of continents like South America and Africa b. fossils occur in identical rock formations on both sides of the Atlantic Ocean c. magnetic poles of large rock formations point in different directions d. at certain places beneath the ocean, the sea floor is spreading e. all of these are evidence that the continents are not static
Which prokaryotic nutritional group use organic substances for carbon and photons for energy?
a. photoautotrophs
b. chemoautotrophs c. photoheterotrophs d. chemoheterotrophs e. methanoheterotrophs