Biology, 12.03.2020 16:23, adriannabrooks18
In 2007, scientists Matthew A. Pasek, Jason P. Dworkin, and Dante S. Lauretta published their study on the corrosion of the meteorite mineral schreibersite (FeNi)3P. These scientists proposed the idea that the corrosion of this meteorite mineral released a phosphite-free radical that could form activated polyphosphates and phosphorylate organic compounds. Many life-forms have phosphorus in them in the form of ATP, DNA, and phospholipids. What does this study suggest about the origin of organic biological molecules on early Earth? A. DNA, ATP, phospholipids, and all other biological molecules developed on meteorites before they came to Earth. B. The substances brought to Earth from meteorites may have played a vital role in the first organic biological molecules. C. All organic biological molecules developed from the mineral schreibersite. D. Phosphorus was the only substance that created biological molecul
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Biology, 22.06.2019 08:00, rosepotato789
Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a. one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b. one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c. one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.
Answers: 1
Biology, 22.06.2019 12:10, MIAkwicc39
What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.
Answers: 2
In 2007, scientists Matthew A. Pasek, Jason P. Dworkin, and Dante S. Lauretta published their study...
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