A baker forgets to put yeast in his bread dough. Which of the following do you expect to happen to the bread as a result?
A) It will take longer to bake.
B) Bacterial contaminants will now be able to grow.
C) The bread will not rise.
D) The bread will look normal but will be tough.
E) The bread will have a sour taste.
C
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The level of organization represented in the
figure is a(n) a. atom. b. tissue. c. molecule. d. organ. e. cell
Which class of bones are part of the appendicular skeletal division?
a. skull b. vertebral column c. ribs\
d. pelvis e. sternum
Single-stranded DNA molecules are said to be antiparallel when they are lined up next to each other but oriented in opposite directions.
a. true b. false
Members of the ancestral salamander species live in northern California. As they migrate southward, populations are separated by the Central Valley. With limited contact between populations on the east and west of the valley, genetic differences accumulate. What type of speciation occurs under these conditions? 
A. sympatric speciation B. allopatric speciation C. Both sympatric and allopatric speciation. D. Neither sympatric or allopatric.