The human kidneys are located
A) in the abdominal cavity just above the rectum.
B) at about the level of the waist.
C) in the chest cavity.
D) on either side of the esophagus.
E) in front of the large intestine.
B
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Similar to single-gene traits, traits determined by multiple genes also show the expected 3:1 ratio of phenotypes in the progeny between two heterozygotes
A. true B. false
Snappers swim by:
a. flexing only the area before the caudal fin. b. flexing only the posterior portion of the body. c. using only their fins. d. undulating the entire body.
Proteins produced by certain white blood cells may actually slow the production and maturation of other immune cells, thereby acting as regulators of the immune response. These are known as
a. cytokinins. b. complement. c. interferons. d. interleukins. e. MHC
How many clones of Trakr, the Ground Zero
hero dog, were delivered to his owner in July 2009?
a. 2 b. 3 c. 4 d. 5 e. 6