White blood cells have surface receptors called _________ receptors that serve as their "feelers" for foreign substances.

A) Pattern recognition
B) Pathogen molecular
C) Antibody recognition
D) Immunogenic


A) Pattern recognition

Biology & Microbiology

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What is the function of sex pili in prokaryotes?

a. biofilm formation b. transfer of DNA c. protein polymerization d. energy production e. lipid synthesis

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In flatworms and sea anemones, circulation of

solutes and gases is by way of

a. interstitial fluid diffusion. b. an open circulatory system. c. a closed circulatory system. d. cell to cell transport. e. intracellular diffusion.

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The great adaptive radiation that resulted in all

of the major animal lineages occurred in the ___ period.

a. Cretaceous b. Devonian c. Jurassic d. Ordovician e. Cambrian

Biology & Microbiology

Which of the following processes is associated with the outer mitochondrial membrane?

A) phospholipid synthesis B) pyruvate oxidation C) ?-oxidation of fats D) proton translocation for ATP synthesis E) electron transport

Biology & Microbiology