_____ is a powerful anticoagulant relased by the basophils and mast cells
Fill in the blank(s) with the appropriate word(s).
Answer: Heparin
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Which of the following best describes the interaction between an enzyme and its
substrate? A) The enzyme temporarily deactivates the substrate. B) The enzyme surrounds and completely contains the substrate. C) The substrate surrounds and completely contains the enzyme. D) Part of the enzyme temporarily binds part of the substrate molecule.
Which is NOT true about fatty acid synthesis?
A. takes place in the cytosol of cells B. results in molecules with an even number of carbon atoms only C. requires more energy than is produced by the catabolism of the same fatty acid D. begins with a molecule of acetyl coenzyme A E. The enzymes that catalyze it are in the same location as those that mediate fatty acid catabolism.
Compared to a solution with a pH of 7, a solution with a pH of 4 is
?A. more acidic and has a 1,000-fold increase in [H+].?B. more acidic and has a 300-fold increase in [H+].?C. more basic and has a 1,000-fold increase in [H+].?D. more basic and has a 300-fold increase in [H+].?E. more basic and has a 300-fold decrease in [H+].
Interaction between the ________ causes a waving or bending that results in the stiffening of microvilli and the cytoskeleton to which they are anchored.
Fill in the blank(s) with the appropriate word(s).