The outer membrane of the mitochondrion is not a significant permeability barrier because it contains transmembrane proteins called ________.

Fill in the blank(s) with the appropriate word(s).


porins

Biology & Microbiology

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The female gamete just before it is fertilized is termed

A) a secondary oocyte. B) an oogonium. C) a zygote. D) a reprocyte.

Biology & Microbiology

Asymmetry, choanocytes, filter feeding, osculum, and spicules are all terms associated with which phylum?

a. Nematoda b. Ctenophora c. Nemertea d. Porifera e. Cnidaria

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During which period did club mosses dominate the landscape?

a. The Permian b. The Devonian c. The Carboniferous d. The Silurian

Biology & Microbiology

The advantages of DNA vaccines include

a. no possibility of infection. b. activation of T and B cells. c. targeted immune response. d. all of the above.

Biology & Microbiology