Which factor does not affect temperature variation among geographic locations?
A) latitude
B) proximity to water
C) elevation
D) longitude
D
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The DNA-binding site for the lactose repressor was identified by:
A. causing cleavage and subsequent methylation at purine residues. B. methylating and hence protecting the DNA. C. comparing DNA sequences protected by wild-type and mutant repressors. D noting the DNA sequences that were protected from methylation by the repressor. E. reading the DNA sequence that was methylated by DMS after repressor binding.
Elements that are required in relatively large amounts by microorganisms are called
A. macronutrients. B. meganutrients. C. multivitamins. D. macromolecules.
Which of these green algae are unicellular?
a. Spirogyra b. Volvox c. Chlamydomonas d. Ulva
All of the following are industrial products produced by microbes EXCEPT
A) amino acids in food supplements. B) antibiotics. C) industrial enzymes. D) uranium. E) vitamin B12 and riboflavin.