The killing of cancerous cells by the immune system is called:
A. immune oversight.
B. immune surveillance.
C. tissue immunity.
D. phagocytosis.
E. hemostasis.
B
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The break of a bone that has been weakened by disease is a ________fracture; when a broken end of the bone pierces the skin, the fracture is ________.
A. pathologic, simple. B. pathologic; compound C. epiphyseal; stress D. greenstick; simple E. stress; greenstick
An enzyme that digests fats is _________.
A) lipase. B) ligase. C) lyase. D) kinase. E) hydrolase.
Chemically gated ion channels are mainly found in the ________ segment of a neuron.
A. conductive B. initial C. receptive D. transmissive
Which of the following statements concerning epithelial cell surfaces is false?
A. Smooth surfaces reduce friction. B. Epithelium with folded surfaces tends to be very rigid. C. Cilia propel materials along the surface of an epithelial cell. D. Epithelium with folded surfaces can change shape. E. Epithelial cells with microvilli are involved in absorption.