____ bonds hold molecules of water together
a. Hydrogen
b. Ionic
c. Covalent
d. Inert
e. Single
A
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When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to
A. an induced fit B. a great range of possible catalytic activities C. a greater supply of activation energy D. more permanent binding through intimate total contact E. more possible products of the reaction
Which of the following is more likely to cause fatal septicemias?
A. Gram-positive bacteria B. Gram-negative bacteria C. negative stained bacteria D. acid-fast stained bacteria
Parazoa
A. are pseudocoelomates. B. exhibit bilateral symmetry. C. include Cnidaria and Ctenophora. D. exhibit primitive segmentation. E. have no true tissues.
How long does it take for a plastic grocery bag to degrade?
A. 1 year B. 1-2 weeks C. more than 50 years D. 10-20 years E. 1-2 months