Which chordate feature is the only one remaining in adult tunicates?
a. notochord
b. dorsal tubular nerve cord
c. gill slits
d. postanal tail

Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen