What continent was the starting point for the origination of humans?
A. Africa
B. Asia
C. Europe
D. Australia
E. North America
A
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What is the target threshold to meet EPA maximum containment level goals?
A. 90% inactivation of microbes present. B. 100% inactivation of microbes present. C. 99.9% inactivation of microbes present. D. At least 50% inactivation of microbes present.
The two strands of a double helix of DNA are linked by what kind of bond?
A) sugar-phosphate linkages B) base-phosphate linkages C) hydrogen bonds between sugars and phosphates D) hydrogen bonds between bases E) sugar-base linkages
In comparison to proteins that are NOT tolerant of high salt content, halophilic proteins often contain ________ hydrophobic amino acids and ________ basic amino acids
a. more / more b. more / fewer c. fewer / more d. fewer / fewer
the __________________ is the sum of all the alleles in a population
A. A. Macroevolution B. Microevolution C. Adaption D. Population genetics