Biology, 12.12.2019 05:31, benwill0702
In a famous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containing only the "heavy" isotope of nitrogen, 15 n n15 . these cells were then transferred to a medium with the "light" isotope of nitrogen, 14 n n14 . the results of the experiment supported the hypothesis of semiconservative replication, which was proposed by watson and crick. heavy dna ( 15 n n15 dna), hybrid dna, and light dna ( 14 n n14 dna) can be separated by centrifugation. if cells containing 15 n n15 dna are transferred to a medium with only 14 n n14 nh 4 cl nh4cl as a nitrogen source, what percent of daughter molecules are composed of hybrid dna after 2 2 generations? daughter molecules: % % predict what percent of daughter molecules would be composed of hybrid dna if dna exhibited conservative replication. that is, if a daughter dna molecule were composed of newly synthesized dna only. daughter molecules:
Answers: 1
Biology, 21.06.2019 16:00, PKTHUNDER5011
Match the digestive enzymes to the macro molecules they to digest. down fats into glycerol and fatty acids down carbohydrates into simple sugars down nucleic acids into nitrogenous bases and simple sugars down proteins into amino acids
Answers: 1
Biology, 21.06.2019 23:40, victoria1831
When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page
Answers: 3
Biology, 22.06.2019 03:30, linag969p9xeno
Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis
Answers: 1
In a famous experiment, matthew meselson and franklin stahl grew e. coli cells in a medium containin...
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