Males never give an X chromosome to any of their sons

a. True
b. False


True

Biology & Microbiology

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Members of which fungal phylum are also called club fungi?

a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota

Biology & Microbiology

Which body plan is characterized by simple gas

exchange mechanisms, two-way traffic through a highly branched, saclike gut, and a thin, flat body with all cells fairly close to the gut? a. cnidarian b. nematode c. echinoderm d. flatworm e. sponge

Biology & Microbiology

Halobacterium has a photosynthetic membrane that appears purple. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants

(That is, the Halobacterium action spectrum has a peak where the green plant action spectrum has a trough.) What wavelengths of light do the Halobacterium photosynthetic pigments absorb? A) red and yellow B) blue, green, and red C) green and yellow D) blue and red

Biology & Microbiology

The reason coral reefs are among the most productive and successful ecosystems is due to ________.

A. the coral-dinoflagellate mutualistic relationship B. commensalisms C. the lichen mutualistic relationship D. All of the choices are correct.

Biology & Microbiology