Which one of the following are structures in the body that are composed of two or more different tissue types joined together to perform a specific function?
A) tissues
B) organs
C) organ systems
D) junctions
E) body cavities
B
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Upon the initial infection of a host cell by bacteriophage ?, the first two proteins produced from expression of the phage genome are:
A. cI and cII. B. N and cI. C. N and Cro. D. Cro and cI.
Rectal swab is:
a. acceptable. b. not acceptable.
Birds differ from earlier vertebrates by ____
a. the presence of feathers b. producing land eggs c. the ability to maintain a constant body temperature through metabolic activities d. the ability to fertilize eggs internally e. their possession of a dorsal nerve cord
The publication of Principles of Psychology by ________ heralded the modern era of biological psychology.
A) William James B) Donald Hebb C) Hermann Ebbinghaus D) Henry James