It's the ninth inning, and the bases are loaded. As the pitcher winds up to throw the ball, how does each tissue in his arm contribute to this critical pitch? The ________ of his fingers grips the ball. His ________ sends instructions that trigger his ________ to contract. His ________ provides stability and transmits the force produced.
A. ectoderm; ectoderm; mesoderm; endoderm
B. epithelium; ectoderm; mesoderm; endoderm
C. epithelial tissue; nerve tissue; muscle tissue; connective tissue
D. connective tissue; nerve tissue; muscle tissue; epithelial tissue
Answer: C
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The process of beer lagering involves ________.
A. distillation B. aging C. carbonation D. None of the choices are correct.
During the light dependent reactions, NADPH ____
a. is an enzyme b. is the oxidized form of NADP+ c. accepts hydrogen and electrons from water d. accepts hydrogen and electrons from carbohydrates e. obtains energy from ATP
Under what environmental conditions would it be MOST advantageous for the photoautotrophic dinoflagellate Peridinium limbatum to reproduce asexually?
A. Increasing water acidity levels caused by rising concentrations of atmospheric carbon dioxide B. Fluctuating seasonal water temperatures C. Increasing concentrations of nitrogen and phosphorus caused by fertilizer runoff D. Decreasing light availability caused by an increase in suspended particles
In 2004, Jun-Yuan Chen and David Bottjer found a fossil approximately 580-600 million years old. Why was this particular fossil significant?
A. It was one of the earliest fossils of a single-celled organism. B. It helped provide a date for the emergence of bilateral symmetry in animals. C. It provided evidence that the earliest life forms were heterotrophic. D. It provided evidence that the earliest life forms were autotrophic. E. It helped provide a date for the emergence of vertebrates.