Bacterial enzymes that are part of a rarely used catabolic pathway are usually organized into a(n)
__________.
a. inducible operon
b. repressible operon
c. inducible zinc finger
d. repressible leucine zipper
e. inducible catabolon
A
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Which cellular structure sorts and ships proteins within the cell?
a. Ribosome b. Centriole c. Nucleus d. Vacuole e. Golgi body
What adaptation(s) allow(s) a rattlesnake to more effectively locate prey?
a. acute sense of hearing b. heat sensors c. acute sense of smell d. acute sense of vision e. acute sense of smell and vision
Which of the following releases substances that
initiate blood clotting? a. lymphocytes b. basophils c. erythrocytes d. neutrophils e. platelets
Each of the following mechanisms plays a role in the return of blood to the heart via veins EXCEPT which one?
A) osmotic pressure exerted by plasma proteins in the blood B) squeezing action of skeletal muscles C) valves that permit the one-way flow of blood returning to the heart and prevent backflow D) pressure changes in the abdominal and thoracic cavities associated with breathing