Which of the following describes homeostasis?
a. Maintaining constant internal conditions
b. Capturing energy for metabolic functions
c. Inhabiting the same specific environment
d. Duplicating and distributing chromosomes
a. Maintaining constant internal conditions
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The most likely explanation for why toothed whales have a blowhole is
A. they evolved from an animal with gills. B. they evolved from an animal with nostrils. C. blowholes are better for large animals. D. blowholes are better for breathing underwater than gills are.
Gram-positive bacteria such as Propionibacterium acnes limit the growth of gram-negative bacteria and some fungi on the human skin by converting secreted ________ to compounds with antimicrobial activity.
A. urea B. lipids C. organic acids D. salts
A biome characterized by cold temperatures, little precipitation, and ground that is frozen for the majority of the year is called the ________.
A. taiga B. desert C. temperate deciduous forest D. tundra
The letter “B” in the above figure represents
a. the root nodules. b. the primary root. c. the primary leaf. d. the cotyledons. e. none of these.