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Biology, 21.06.2019 18:30
Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide â hydrazine + water b. nitrogen + water â hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide â nitrogen + water d. water + hydrogen peroxide â nitrogen + hydrazine
Answers: 3
Biology, 21.06.2019 21:20
Atypical human cell is approximately 12.00 Ξm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.
Answers: 3
Biology, 22.06.2019 11:30
According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
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Biology, 22.06.2019 13:00
Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols
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