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In a newly-explored deep-sea environment, several potentially new species of apparent bacteria have been discovered. In some of these single-celled life forms, a novel structure has been observed. The structure is apparently bound to the interior surface of the cell membrane and so does not float freely in the cytosol. […]

In preparation for cloning a gene into a plasmid, you haveobtained a 3kb plasmid vector containing two selectable markergenes. One selectable marker renders E. coliresistant to the antibiotic ampicillin. The other selectablemarker, which also contains the multiple cloning site, rendersE. coli resistant to the antibiotic tetracycline. Ifyou successfully clone a […]

What is a population? a group of organisms that occupy the same general area and all the abiotic factors that affect them a group of individuals of the same species that occupy the same general area a group of individuals of the same species that occupy the same general area […]

Niremberg used the enzyme polynucleotide phosphorylase to assembleRNAs with random sequences in the absence of a template. Supposethey added the enzyme to a solution of 90%CTP and 10%UTP, and thenused a cell-free system of protein synthesis to make peptidesaccording to the sequences in their synthetic RNAs. a.) Which amino acids […]