If life evolved in hydrothermal vents, is it likely the first cells were in the Domain Archaea?
What will be an ideal response?
ANSWER: Not necessarily. Organisms found in hydrothermal vents are closely related to modern
organisms that do not live in hydrothermal vents. Archaea are more closely related to
Eukarya than Bacteria are to Eukarya. While the name Archaea suggests they are
“ancient”, the evidence does not suggest they are more ancient than Bacteria.
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Llamas, which are customarily known as mountain dwellers, have hemoglobin with higher O2 binding
affinity than that of humans. That being said, how would you predict the llama hemoglobin-O2 dissociation curve would differ compared to that of a human (see diagram below)? ©2014 Brooks/Cole, Cengage Learning
What will be an ideal response?Why would athletes in aerobic sports benefit by training at high altitude? What will be an ideal response?
The theory that individuals with certain traits are more fit for their local environment and therefore are more likely to survive and reproduce is known as
A) natural selection. B) macroevolution. C) gene flow. D) antigenic drift. E) the bottleneck effect.
Fossil fuels, such as coal and oil, are derived from which biogeochemical cycle?
a. The hydrological cycle b. The phosphorous cycle c. The carbon cycle d. The oxygen cycle e. The nitrogen cycle