Green and purple bacteria are ________. This group of organisms removes electrons from sulfide, thiosulfate, and succinate to generate NADPH.
Fill in the blank(s) with the appropriate word(s).
anoxygenic phototrophs
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The chains of an antibody molecule are bonded to one another by
A. disulfide bonds. B. hydrogen bonds. C. ionic bonds. D. oxygen bonds.
In the cladogram shown, the animals across the top are a lancelet, lamprey, salmon, lizard, and rabbit (from left to right). If the salmon, lizard, and rabbit are an ingroup, which animals make up the outgroup, and which characteristics are synapomorphies of the ingroup?
A. Lamprey and lancelet; notochord and vertebrae
B. Lancelet only; notochord, vertebrae, hinged jaw, tetrapod, and mammary glands.
C. Lancelet and lamprey; hinged jaw.
D. Lancelet, lamprey and salmon; notochord, vertebrae, and a hinged jaw.
E. Lizard and rabbit; tetrapod and mammary glands.
Assuming arterial blood pressure stays constant, if an arteriole constricts do the diameter is reduced to 50% of the original value, how will blood flow be reduced?
What will be an ideal response?
Otitis media may lead to dangerous meningitis in children due to infection with
A. Streptococcus agalactiae. B. Streptococcus pneumoniae. C. Streptococcus mutans. D. Enterococcus. E. Mycoplasma pneumoniae.