When blood glucose is low, __________ is secreted, which calls for the liver to break down glycogen. Fill in the blank(s) with the appropriate word(s)
ANSWER: glucagon
You might also like to view...
Lack of vitamin ____ leads to rickets
a. a b. b c. c d. d e. e
An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species. Instead, peaks of abundance of dominant species are merely randomly spaced segments along a continuum
This distribution of species supports the A) unified concept of a community. B) organismic concept of a community. C) individualistic or continuum concept of a community. D) successional concept of a community.
Gut-dwelling ____ help cattle, sheep and related grazing animals break down ____ in plant material
a. ciliates; chlorophyll b. apicomplexans; cellulose c. dinoflagellates; cellulose d. dinoflagellates; chlorophyll e. ciliates; cellulose
What is the molecular clock?
A) The rate at which mutations accumulate in DNA within a species. B) The rate at which new species diverge from ancestral species. C) The rate at which structures no longer needed become small and insignificant. D) The rate at which new discoveries are made about gene homology.