The adult human jawbone, or mandible, arises embryonically from a gill arch. The arch and the mandible are said to be ________
A) coevolved structures B) homologous structures
C) convergent structures D) analogous structures
Answer: B
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The absence of a band when the linker is present at about -25 indicates that
A. This region is critical for the in vitro transcription reaction B. this region is not critical for the in vitro transcription reaction C. it is not possible to determine if this region is critical for in vitro transcription D. the linker interfered with transcription Bloom's Level:
What played a pivotal role in the significant reduction of Northwest Arctic cod reaching a breeding age?
a. Drift nets b. Dredging c. Trawl nets d. Nutrient supply
A loopful of bacteria containing 1000 bacterial cells is inoculated into a nutrient broth and incubated. After a negligible lag phase, the culture goes into exponential growth for two hours. The generation time for the bacterium is fifteen minutes. Which equation is the correct one to determine the number of cells present after two hours of log phase growth?
A. 1000 X 28 B. 1000 X 2 X 2 X 15 C. 1000 X 22 D. 1000 X 16
Explain how abscisic acid promotes the closure of stomates. Identify the molecules involved at each step.
A. ________B. ________C. ________D. ________
What will be an ideal response?