When fossils were first discovered, some scientists suggested they were the remains of extinct organisms. This idea
conflicted with the views of natural theologians who____.
a. believed that body plans were perfect
b. did not believe in the stratification of rocks
c. did not believe extinctions ever occurred
d. believed fossils in the uppermost layers were those of living organisms
e. believedfossils in each different rock layer were similar to one another
ANSWER: c
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The yield of ATP per glucose molecule in fermentation is ____
a. 2 b. 6 c. 12 d. 36 e. 40
In Arabidopsis, the monopteros gene regulates:a
positional effects in leaves.
b. the activity of the vascular cambium. c. the differentiation of wounded parenchyma cells into tracheids. d. apical-basal pattern formation. e. the location of the preprophase band.
Hox genes determine an animal's
a. body plan b. size c. eye color d. skin color
Which of the following elements is least abundant in living organisms?
(a) sulfur (b) carbon (c) oxygen (d) nitrogen