Which of the following best explains why there is no growth on plate II?
(A) The initial E. coli culture was not ampicillin-resistant.
(B) The transformation procedure killed the bacteria.
(C) Nutrient agar inhibits E. coli growth.
(D) The bacteria on the plate were transformed.
Ans: (A) The initial E. coli culture was not ampicillin-resistant.
You might also like to view...
The high variability of the types of G protein-coupled receptors allows for:
A. different types of cells to respond to different types of signals. B. different types of signal-transduction pathways to respond to signals. C. a rapid response to cell signals. D. a sensitive response to cell signals. E. All of these choices are correct.
Phospholipids and ________ are the major components of cell membranes.
A. glycolipids B. cholesterol C. glucose transporters D. glycocalyx E. proteins
Which organism is an endotherm?
A) a mouse B) an insect C) a salmon D) a frog
Choose the letter of the best match from the following:A. hypocotylB. endospermC. scutellumD. radicleE. epicotylThe stem axis of the embryo below the cotyledons in some seedlings.
Fill in the blank(s) with the appropriate word(s).