Protists are ____
a. the simplest of eukaryotes
b. generally aquatic
c. members of a single kingdom
d. the simplest of eukaryotes, and are generally aquatic
e. the simplest of eukaryotes, generally aquatic, and members of a single kingdom
ANSWER: e
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Which organ system(s) play role(s) in eliminating metabolic wastes from the body?
a. excretory system only b. respiratory system only c. nervous system only d. excretory and respiratory system e. excretory, respiratory, and circulatory system
Cells that can break down bone matrix by secreting enzymes and acids are called ________
a. osteocytes b. osteoclasts c. marrow d. osteoblasts
In which digestive structure is food called bolus?
a. in the liver b. in the small intestine c. in the large intestine d. in the mouth
PPD (purified protein derivative) or tuberculin is injected intradermally to test whether an individual is infected with tuberculosis. After 48-72 hours post-injection, the test is read by measuring:
A.The intensity of the red coloration of the injection site B. The number of blebs or wheals at the injection site C. The diameter of the bleb or wheal D. The distance the bleb or wheal forms from the injection site