Lignin is not found in stems of _____________
a. mosses c. monocots
b. ferns d. a and b
A
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Fairy shrimp are a type of crustacean that is typically found in temporary ponds across the
world, including desert areas and ice-covered mountain lakes. They swim with their ventral side up (i.e., “upside down”) using their leaf-like swimming legs as paddles. Based on this description, fairy shrimp have a __________ ecological niche
a. broad b. narrow c. variable d. herbivorous
Natural selection in the cichlid fish species of Lake Victoria occurred via ____
a. extinction b. phylogeny c. cladistics d. macroevolution e. microevolution
In bacteria, the small, circular pieces of DNA that are located outside the chromosome are called
A) sex pili. B) plasmids. C) bacteriophages. D) flagella. E) endospores.
Peptide hormones
A. are able to pass through the membrane and bind to a receptor in the cytoplasm. B. initiate gene expression. C. act much more slowly than steroid hormones. D. bind to a receptor in the plasma membrane. E. are composed of a complex of four carbon rings.