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
Biology & Microbiology
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