In the biological sciences, the null hypothesis is usually rejected if the P value is _____
A. Greater than 1
B. Less than 0.30
C. Less than 0.95
D. Less than 0.05
E. Less than 1
D
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The following question(s) relate to the data table below, showing typical fluctuating pH and dissolved oxygen levels in a fish pond with a heavy concentration of algae over a 24-hour period.TimeOxygen (ppm)pH2 a.m.4.57.74 a.m.2.87.26 a.m.2.26.88 a.m.2.56.810 a.m.3.97.2Noon6.57.72 p.m.10.08.34 p.m.12.18.86 p.m.13.19.28 p.m.13.09.210 p.m.12.08.8Midnight10.88.3Upon closer examination, the fish appeared to have died from a lack of oxygen. What time of day did the fish most likely die?
A. At sundown B. Around midnight C. In the middle of the afternoon D. Just before dawn
Some archaea are commonly found in
A. meteors. B. boiling hot springs. C. the Great Salt Lake. D. your refrigerator. E. boiling hot springs AND the Great Salt Lake.
A certain biochemical reaction must be coupled to the hydrolysis of at least two ATP molecules (?G = -14.6 kCal) in order to occur. What is a possible ?G for this biochemical reaction?
A. ?G = -8 kCal
B. ?G = -14.6 kCal
C. ?G = +8 kCal
D. ?G = -16 kCal
E. ?G = +16 kCal
Synthetic biologists are trying to create cells from raw material. One step in the process is encapsulating genetic material into a compartment. Researchers of the origin of life think that the earliest cells on Earth may have used RNA as their genetic material instead of DNA. As biologists consider which genetic material to use in creating their synthetic cells, which of the following characteristics of a single-stranded RNA genome should they keep in mind?
A. RNA is highly chemically stable relative to DNA. B. RNA cannot serve as a template. C. No enzymes can produce RNA. D. A newly synthesized RNA strand is not identical to the template strand.