What is the definition of a sarcoma?
A. A cancer that is derived from skin or epithelial linings of internal organs or glands
B. A cancer that is derived from muscle, bone, fat or soft tissues
C. A cancer that is derived from blood and lymphatic systems
D. A cancer that is derived from brain and spinal tissue
Ans: A. B. A cancer that is derived from muscle, bone, fat or soft tissues
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Which of the following would you find in the stomach?
A. carboxypeptidase B. trypsin C. chymotrypsin D. pepsin E. both trypsin and chymotrypsin
Marine biology is: a. the exact same field of study as oceanography
b. the study of living organisms that reside in the seas and oceans. c. a combination of many science disciplines. d. the study of the oceans and their associated phenomena.
Most of the ocean’s productivity occurs
a. in the open ocean b. in the intertidal zone. c. in the neritic zone. d. near hydrothermal vents. e. in the benthic province.
Which of the following statements about archaea is FALSE?
A) They are prokaryotes. B) They lack peptidoglycan in their cell walls. C) Some are thermoacidophiles; others are extreme halophiles. D) They evolved before bacteria. E) Some produce methane from carbon dioxide and hydrogen.