Which of the following glandular secretions involved in digestion would be most likely to be released initially as zymogens?
A. protein-digesting enzymes
B. fat-solubilizing bile salts
C. acid-neutralizing bicarbonate
D. carbohydrate-digesting enzymes
A. protein-digesting enzymes
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The presences of different genes for several types of hemoglobin in mammals, but not in sharks and
many other vertebrates, is evidence of ____ of genetic material.
a. an inversion b. duplication c. reciprocal translocation d. deletion e. both duplication and deletion
The diet of the first primates included
a. insects. b. seeds. c. bugs. d. eggs. e. all of these.
Which of the following would help conservation efforts in terms of increasing corridor use?
A) purchasing larger preserve areas B) purchasing areas being clear cut C) purchasing several small areas D) purchasing areas that connect protected areas
A friend asks you for a definition of endemic because she is writing a history paper and this word keeps occurring in the literature in reference to bison on the Great Plains of the United States. Your response is that the word endemic means
A. a species that has coevolved with humans on Earth. B. a species that lives in only one area of Earth. C. a species that has gone extinct since humans have evolved on Earth. D. a species that exists in many habitats on Earth.