In mutualistic interactions, one species is harmed and one benefits
Indicate whether the statement is true or false
FALSE
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As scientists began to purify and analyze RNA, it became apparent that rRNA and tRNA were modified. Whichtechnique allowed them to separate the various nucleotides so they could analyze the modifications?
A. polyacrylamide electrophoresis B. agarose gel electrophoresis C. thin-layer chromatography D. sucrose gradient centrifugation E. mass spectrophotometry
A researcher wants to insert a DNA fragment into a plasmid. Which enzyme will join the two DNA molecules
together?
a. primase b. ?-galactosidase c. restriction endonuclease d. DNA ligase e. DNA polymerase
The process of photosynthesis in plants occurs in specialized cells within the leaf called ________ cells
Fill in the blank(s) with correct word
Syphilis can be diagnosed by the
A. latex agglutination test. B. Widal test. C. antistreptolysin O test. D. rapid plasma reagin test. E. Weil-Felix reaction.