A testable explanation of a broad range of related phenomena that is relied upon by scientists with a high degree of confidence is referred to as ________.
a. an act
b. a theory
c. a dogma
d. a law
Answer: b. a theory
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Interspecific competition includes all of the following EXCEPT competition for __________
a. mates b. food c. habitat d. water
In the deductive approach to scientific thought processes, we begin with __________ and make
__________ based on that information. a. premises; observations b. observations; premises c. observations; conclusions d. observations; inductions e. premises; conclusions
Which of the following groups of photosynthetic bacteria are capable of oxygenic photosynthesis?
A. The cyanobacteria B. The green bacteria C. The purple bacteria D. All of the choices are correct.
Phase 1 of the creation of life on earth was _____________________. Phase 2 was the formation of self-replicating, information containing molecules. Phase 3 was the development of a membrane, enabling metabolism and creating the first cells.
a) the formation of RNA b) the formation of small molecules containing carbon and hydrogen c) the formation of DNA d) the increase in the amount of atmospheric oxygen. e) the formation of membranes so that later cells could develop