Explain the role of behavioral thermoregulation in the experiments performed with Caenorhabditis elegans by Anderson and colleagues (2011 )
What will be an ideal response?
Caenorhabditis elegans is an ectothermic organism, and its body temperature is determined by its environment. Since body temperature has significant effects on both performance and fitness, the worms will move to a temperature that optimally supports maximal performance and fitness.
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If the Tn10 transposon is used to mutagenize a bacterium for the purpose of creating a mutation in the his operon, what would be the most appropriate selection media?
A) rich media that contains all of the amino acids supplemented with tetracycline B) minimal media supplemented only with histidine C) minimal media supplemented with tetracycline and histidine D) minimal media supplemented with tetracycline alone
Sea cucumbers will ____ when environmental conditions deteriorate
a. eject their digestive tract, respiratory structures, and gonads b. crawl to an area with more favorable conditions c. form a resistant spore d. float to the surface and then later drop to a more favorable location e. crawl deep into the ocean mud on the bottom
Within the inner membrane of a chloroplast, interconnected sacs of membrane called ________ are suspended in a thick fluid called the ________
A) chlorophyll... thylakoid B) thylakoids... grana C) thylakoids... stroma D) grana... thylakoid
In which of the following ways are coral reefs impacted from climate change?
A. Water oxygen levels are decreasing, preventing coral from being able to survive. B. Coral reefs are dying as oceans become more basic. C. Invasive species are making their way into coral reef ecosystems, displacing existing populations. D. Cooling ocean temperatures are preventing the growth of new coral reefs.