Scientific work involves
a. the natural and supernatural world.
b. retesting theories frequently for verification.
c. proving theories with absolute certainty.
d. testing hypotheses under every possible circumstance.
e. coming up with the best descriptions of reality.
ANSWER: e
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In the Hardy-Weinberg equation , the genotype frequency of heterozygotes is represented by
A. p2 B. 2pq C. q2 D. p2 +q2 E. p2 + 2pq
In a search for new antibiotics, a previously unknown organism has been recovered from the soil. It is nonmotile and is composed of long threadlike structures formed from nucleated cells. It is not-photosynthetic and absorbs its nutrients. This organism will most likely be classified among the
A. Eukaryotes (Fungi) B. Archaea C. Eukaryotes (Algae) D. Eukaryotes (Protozoa) E. Bacteria
Which organelles store starch in plants?
a. amyloplasts b. chromoplasts c. vacuoles d. chloroplasts
The oldest fossils of eukaryotes have been estimated to be
A. 1995 years old. B. 4.5 billion years old. C. 1.5 billion years old. D. 6000 years old. E. 8 billion years old.