Why is there a bias towards positive results in scientific publications?
A) because only studies that yield positive results are accepted by scientific journals
B) because studies that yield positive results are better designed than those that yield negative results
C) because studies always yield positive results
D) because studies that yield positive results are more likely to be submitted for publication than studies that yield negative results
Answer: D
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A scientist is studying several areas along an elevation gradient. Her study involves prescribed burns (purposefully set, low-intensity fires) in the different areas, followed by a comparison of the type and abundance of organisms that colonize them over the next ten years. What scale best describes her study?
A. Physiological ecology B. Ecosystem ecology C. Organismal ecology D. Community ecology E. Population ecology
What is a benefit of swarming behavior? a. Increases the likelihood of fertilization
b. Finding individuals to mate with long-term. c. Synchronization to lunar cycles. d. Bringing juvenile individuals together to create social bonds.
In dissimilatory sulfate reduction by Desulfovibrio, electrons are passed out of the cell, where they are used to reduce sulfide completely to sulfate.
Answer the following statement true (T) or false (F)
To detect whether or not a cell has a specific region of a gene, researchers add radioactively labeled DNA molecules that can bind to their complementary DNA sequences. To detect a mutant version of the BLM gene, researchers added the radioactive DNA
molecule 5' - GCTAGCTAAGCCCA - 3' to cells. What DNA sequence were the researchers trying to detect? A) 5? - GCTAGCTAAGCCCA - 3' B) 3? - GCTAGCTAAGCCCA - 5' C) 5? - CGATCGATTCGGGT - 3' D) 3? - CGATCGATTCGGGT - 5'