The appendages in both fishes and tetrapods develop from buds of ____, the middle embryonic tissue layer
a. ectoderm
b. endoderm
c. mesoderm
d. epiderm
e. hypoderm
ANSWER: c
Biology & Microbiology
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The "9 + 0" cilia arrangement is associated with
A) eubacteria. B) cyanobacteria. C) cilia lining the respiratory tract. D) flagella on sperm cells. E) animal embryonic development.
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Stromatolites are ________
a. mineral features in caves that extend downward from the ceiling b. the earliest type of seed plant c. mat-like remains of bacteria found in extinct hydrothermal vents d. dome-shaped, layered structures formed by photosynthetic bacteria
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The variable region of a light chain is indicated by
a. A. b. B. c. C. d. D. e. E.
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Which of the following processes does NOT require ATP?
a. facilitated diffusion b. active transport c. phagocytosis d. endocytosis
Biology & Microbiology