Carla is having problems with infections. Which body system is failing?
A. integumentary system
B. cardiovascular system
C. immune system
D. urinary system
E. musculoskeletal system
Answer: C
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The immunochemical test that involves the agglutination of an artificial carrier particle with the antigen bound to its surface and an antibody present in a specimen is referred to as:
a. double immunodiffusion. b. counterimmunoelectrophoresis. c. particle agglutination. d. enzyme immunoassay.
The evolution of many species from a single common ancestor is called
a. adaptive radiation b. punctuated equilibrium c. genetic drift d. disruptive selection e. microevolution
The urinary bladder, identified as ____ in the
above diagram, is separated from the ____ by a sphincter.
a. A; ureter b. C; ureter c. A; urethra d. C; urethra e. none of these letters; urethra
Carbon dioxide enters a plant from the atmosphere through pores called
A. guard cells. B. companion cells. C. sieve tubes. D. nodes. E. stomata.