Which of the following organisms would be considered a primary producer?
a. a spider
b. an antelope
c. an oak tree
d. a wolf
e. a bass
C
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The most common portal of entry for bacteremia is:
a. the genitourinary tract. b. the respiratory tract. c. an abscess. d. the biliary tract.
Plant hormones produce their effects by _____
I) altering the expression of genes II) modifying the permeability of the plasma membrane III) modifying the structure of the nuclear envelope membrane A) only I B) only II C) only III D) only I and II E) I, II, and III
Which structure is part of the brain stem?
A. thyroid B. hypothalamus C. adrenal cortex D. Medulla Oblongata
The pain produced in an internal organ may be
perceived as occurring somewhere else. This phenomenon is called a. mixed nerve messages. b. referred pain. c. phantom pain. d. psychosomatic pain. e. hypochondria.