Lipid-soluble steroid hormones are synthesized from

A. cholesterol.

B. amino acids.

C. nucleotides.

D. proteins.

E. carbohydrates.


A. cholesterol.

Biology & Microbiology

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The Phylocode is a set of rules for

a. naming traditional taxa. b. making a phylogenetic tree. c. naming clades. d. creating binomials. e. insuring strict monophyly in classification.

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Exocrine glands secrete all of the following EXCEPT ____

a. mucus b. hormones c. earwax d. milk e. digestive enzymes

Biology & Microbiology

The difference between septate hyphae and aseptate hyphae is

A. a difference in haploid and diploid cells. B. a distinction between saprotrophic fungi and parasitic or disease-causing fungi. C. a distinction between plasmodial masses with many nuclei and nonliving zygospores. D. a classification trait that separates basidiomycotes from ascomycotes. E. determined by whether the hyphae have cross walls or lack cross walls.

Biology & Microbiology

A microbiome is usually composed of

A. biospheres. B. a single species. C. ecosystems. D. populations E. sets of guilds.

Biology & Microbiology