Which of the following would be the strongest evidence for or against the necklace's effectiveness?
A) A bar graph comparing the percentage of players who do with the percentage of players who do not wear the necklace
B) A scatter plot showing days on the disabled list and percentage of players who do or do not wear the necklace
C) A bar graph illustrating the satisfaction levels of the players who wear the necklace
D) A bar graph comparing batting averages of the players who wear the official titanium necklace and those who were unknowingly wearing a fake titanium necklace
D
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A researcher examines a piece of oak tree bark under a microscope. He notices many small holes or spaces within his bark sample. What are these areas?
A. stomata B. suberins C. pericycles D. lenticels
It has been observed that when plants are subjected to extreme physical stress such as drought or high salinity, the transcription and activity of transposase genes increases. Increased transposase activity may
A) increase the rate of mutation under stressful conditions. B) aid in repairing DNA damage caused by stressful conditions. C) halt DNA replication and cell division. D) increase homologous recombination and genetic diversity. E) explain why some plants can't withstand drought conditions.
Which of the following features is NOT an advantage of an organism that has a viviparous life history?
A. The mother supplies the offspring with nourishment, even after birth. B. Development of the offspring occurs inside of the female. C. Offspring can live independently shortly after they are born. D. The eggs are retained within the body of the mother until the offspring are able to fend for themselves. E. The unborn offspring is supplied with a continuous flow of nutrients during development.
Which of the following would be most affected by a mutation that prevented cells from forming tight junctions?
A) attachment of cells to the surrounding matrix B) direct flow of water and small molecules from one cell to another C) integrity of the inner lining of the digestive tract D) attachment of the cytoskeleton to the inside of the plasma membrane