Imagine that every person on Earth had an ecological footprint the size of an average Haitian person's ecological footprint. Which of the following is a potential result?
a. we would quickly run out of renewable and nonrenewable resources because we would have to use even more fossil fuel to support our energy demands
b. we would exceed the biocapacity of Earth
c. it would take the equivalent of about four Earths to support all of us
d. our effect on Earth's resources would be at a much more sustainable level than it is currently
e. a, b, and c are all potential results
Answer: d. our effect on Earth's resources would be at a much more sustainable level than it is currently
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You wanted to test a single fruit fly for the presence of the TOLL protein , so you prick it with a needle coated in fungal spores. The fly dies 2 days later. Which of the following statements is TRUE?
A. This is evidence that the TOLL protein is present. B. This is evidence that the TOLL protein is not present. C. The TOLL protein is only found in humans. D. This is inconclusive evidence.
You, as a cell biologist, discover that there is strong evidence that chloroplasts, found in plant and algal cells, are descended from bacteria but not eukaryotes. What theory would explain this finding?
A) macroevolution B) endosymbiont C) back to front D) bottleneck
Certain prokaryotes can withstand drying and hotter temperatures because of their ability to form
A. organelles. B. plasmids. C. endospores. D. cell walls. E. flagella.
Constant regulation of blood pH is critical. There are several processes (and several organ systems) involved in this regulation. Fully explain two different ways that blood pH is regulated by the urinary system
What will be an ideal response?