Carl Woese investigated evolutionary relationships among prokaryotes by _____
a. comparing complete genome sequences
b. comparing ribosomal RNA gene sequences
c. classifying organisms based on metabolic patterns
d. protein arrays
e. by using newly advanced culture methods to compare organisms
b
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In a growing population, the youngest age classes have
A. the highest number of deaths/year. B. the fewest individuals. C. the most individuals. D. the smallest number of deaths/year. E. the most individuals and the largest number of deaths/year.
Which of the following molecules is LEAST like the other three in terms of function?
A. NAD B. ATP C. FAD D. NADP
Consider the following food chain: hawk - rabbit - clover. Each species will contain a different amount of calories in its body (clover: 10 calories, rabbit: 500, and hawk: 1200). Each species has a different daily caloric requirement (clover: sunlight, rabbit: 100 calories, hawk: 300). How many clover plants, per day, does it take to support one hawk?
A. approximately 30 clover plants B. approximately 600 clover plants C. approximately 60 clover plants D. approximately 3 clover plants E. None, clover plants do not support hawks.
The process of ________ requires participation of tRNA molecules
A) DNA replication B) capping C) transcription D) translation E) gene regulation