The reason bread dough "rises" is due to the production of
A) lactic acid. B) carbon dioxide gas.
C) ethanol. D) oxygen gas.
B
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Which of the following represents the correct order of evolution of requirements for complex multicellularity in animals?
A. adhesion, cell signaling, gap junctions, bulk transport B. adhesion, gap junctions, cell signaling, bulk transport C. gap junctions, cell signaling, adhesion, bulk transport D. bulk transport, adhesion, gap junctions, cell signaling
True wood is produced only by:
a. giant horsetails b. conifers c. accumulated sediments that have compacted over geologic time d. seed plants e. seedless vascular plants
The __________ is the pelvic girdle, pectoral girdle, and paired limbs. Fill in the blank(s) with the appropriate word(s)
This newly identified organism has been discovered to live on our skin
a. reduce pH b. increase pH c. no effect