White blood cells that engulf and destroy bacteria are called ________.
A) Phagocytes
B) Lymphocytes
C) Granulocytes
A) Phagocytes
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The function of the torus in the walls of tracheids is:
A. allowing the passage of water B. stopping backflow of water C. secretion of resin D. sealing off air bubbles E. allowing the escape of air
Based on composition similarities, actin can be divided into two major groups: the muscle-specific actins (________-actin) and nonmuscle actins (________- and ________-actin).
Fill in the blank(s) with the appropriate word(s).
The only protists that have 2 types of nuclei in each cell are
a. Archaeplastida. b. Dinoflagellates. c. Ciliates. d. Excavates. e. Amoebozoans.
To be diagnosed as having hypertension, you consistently will have a diastolic pressure of ______ mm
Hg and a systolic pressure of _____ mm Hg. a. 120; 80 b. 80; 120 c. 90; 140 d. 140; 90 e. 120; 73