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.

Biology & Microbiology

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Phospholipids and ________ are the major components of cell membranes.

A. glycolipids B. cholesterol C. glucose transporters D. glycocalyx E. proteins

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Which organism is an endotherm?

A) a mouse B) an insect C) a salmon D) a frog

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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).

Biology & Microbiology