Increased rate of photosynthesis is the most likely explanation as to why atmospheric CO2 levels appear lowest during glacial periods of Earth's history
A. true
B. false
B
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Bread mold can grow in a minimal medium without supplements (wild type) while certain mutated strains (mutants) can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis:
minimal ------> ornithine -------> citrulline ------> arginine, where enzyme 1 converts the precursor to ornithine, enzyme 2 converts ornithine to citrulline, and enzyme 3 converts citrulline to arginine. Which of the following would be TRUE of a strain that can grow in minimal medium containing ornithine, citrulline, or arginine, but not in minimal medium alone? A. The strain would have a mutation in the gene that encodes enzyme 1. B. The strain would have a mutation in the gene that encodes enzyme 2. C. The strain would have a mutation in the gene that encodes enzyme 3. D. The strain would have a mutation in the gene that encodes for enzymes 1, 2, and 3. E. The strain would be the wild type with no genetic mutations.
The Great Pacific Garbage Patch is a region of the north central Pacific where a high concentration of confetti-like
plastic particles swirl slowly around an area as large as the state of ____.
a. Alaska b. Idaho c. Rhode Island d. Texas e. Pennsylvania
As succession proceeds, what occurs with animals living in the habitat?
A) Animals adapt to the new vegetation. B) Animals leave as their habitat disappears. C) New animal species evolve in response to vegetation. D) Animal species diversity continually decreases.
________ are large cells that clean up debris and destroy bacteria by phagocytosis
Fill in the blank(s) with correct word