A network of interactions that involves the cycling of materials and the flow of energy between a community and its physical environment is a(n) ____

a. population
b. community
c. ecosystem
d. biosphere
e. species


c

Biology & Microbiology

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Functional traits can be shared between organisms with divergent SSU rRNA sequences because

A) functional traits may be lost by different lineages over time. B) functional traits may evolve independently in different lineages over time. C) horizontal gene transfer can result in the transfer of genes between divergent lineages. D) functional traits may evolve independently, be shared through horizontal gene transfer, or be lost in divergent lineages.

Biology & Microbiology

When protists feed on solid nutrients such as bacteria by phagocytosis, they are said to be using ________ nutrition.

A. holozoic B. endozoic C. saprozoic D. parasitic

Biology & Microbiology

At the milestone that defines anaphase, the chromosomes

a. separate. b. come together. c. are at opposite poles. d. line up. e. cross over.

Biology & Microbiology

Which of the following examples of type II hypersensitivities are matched incorrectly with their mediated mechanism?

A) hemolytic disease of the newborn: cytolytic B) rheumatic heart disease: cytolytic C) Goodpasture syndrome: noncytolytic D) myasthenia gravis: noncytolytic E) Graves' disease: noncytolytic

Biology & Microbiology