What is the right sequence of events applied in the scientific method?
a. hypothesis; initial observation; data analysis; test; conclusion
b. initial observation; data analysis; hypothesis; test; conclusion
c. initial observation; hypothesis; data analysis; test; conclusion
d. initial observation; hypothesis; test; data analysis; conclusion
e. hypothesis; data analysis; initial observation; test; conclusion
ANSWER: d
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When a plant is attacked by an herbivore, which of the following actions does not occur?
A. expression of new sets of genes B. an increase in the production of chemical defenses C. mechanical reinforcement of cell walls D. inhibition of jasmonic acid E. production of volatile compounds that attract herbivore predators
Maintaining a constant internal environment for all biological process is known as what?
a. regulation b. homeostasis c. adaptation d. energy usage
Chargaff's rule states that:
A: DNA has equal amounts of C and G. B: RNA has equal amounts of C and G. C: all organisms have the same percentage of C + G bases in their DNA. D: DNA has equal amounts of C and T. E: in DNA, the total amount of C + G = the total amount of A + T.
Which of the following is an example of a dye used in a simple stain?
a. Methylene blue b. Carbolfuchsin c. Nigrosin d. Eosin