Which organism is used in the genetic engineering of plants?
a. E. coli
b. T. aquaticus
c. A. tumefaciens
d. P. flourescens
e. B. thuringiensis
ANSWER: c
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One of the most intensively studied virulent phages which infects E. coli is
A. T9. B. T4. C. beta. D. gamma.
A _____, such as a vitamin, binds to an enzyme and plays a role in catalysis.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true of aerobic respiration compared to anaerobic respiration?
a. Aerobic respiration uses oxygen as a final electron acceptor, whereas anaerobic respiration uses an inorganic molecule other than oxygen as the final electron acceptor. b. Aerobic respiration and anaerobic respiration both require oxygen as a final electron acceptor. c. Aerobic respiration is less efficient than all forms of anaerobic respiration, producing less ATP and larger end-products. d. Aerobic respiration uses oxygen as a final electron acceptor, whereas anaerobic respiration uses an organic molecule.
The gizzard is to a bird as the ________ is/are to a mammal.
A. teeth B. liver C. cecum D. pancreas E. stomach