The plasmid vector pBR323 has both tetracycline and ampicillin resistance markers, an origin of replication and a multiple cloning site in the tetracycline resistance marker. What selection is possible to identify plasmid vectors with foreign DNA in the multiple cloning site (i. e. cloned DNA)

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.