Hans Selye defined stress as
A. environmental factors that result in anxiety
B. the physiological reaction of the body to environmental factors
C. a negative emotion resulting from environmental unpleasantness
D. the nonspecific response of the body to any demand made on it
Answer: D. the nonspecific response of the body to any demand made on it
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The inner cell mass of the blastula forms:
A. a bilaminar embryo consisting of the epiblast and the hypoblast. B. a trilaminar embryo consisting of the epiblast, the mesoblast, and the hypoblast. C. a gastrula consisting of a trilaminar embryo. D. a trilaminar embryo consisting of ectoderm, endoderm, and mesoderm. E. a bilaminar gastrula consisting of the epiblast and the hypoblast.
What was the color of the other pigment present in the shell extract of the Aa individuals?
a. Yellow b. Grey c. Pink
Evidence shows that the earliest life may have existed how long ago?
a. 2 billion years ago b. 3.5 billion years ago c. 1.3 billion years ago d. 630 million years ago e. 250 million years ago
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Figure 36.2B
Circulation in the accompanying diagram functions primarily as a(n) ____.
A. an open circulatory system B. system consisting of mostly of tissue spaces C. closed circulatory system D. interstitial fluid system E. three-directional system