Which of the following does not contribute to the infectious ability of prions?
A. prion proteins are not digested
B. prion proteins can induce the misfolding of normal proteins
C. prion proteins can enter the bloodstream
D. prion proteins are deposited as aggregates
E. prion diseases progress slowly
D. prion proteins are deposited as aggregates
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The distinctive feature of chloroplasts is that they contain a green pigment called:
A. Gram stain. B. chlorophyll. C. hemoglobin. D. chromatin. E. keratin.
Each monomer of actin binds one molecule of the nucleotide triphosphate
a. ATP. b. GTP. c. CTP. d. UTP. e. TTP.
Signs and symptoms of nerve agent exposure include all of the following, EXCEPT:
A) tachycardia. B) bronchorrhea. C) constricted pupils. D) excessive salivation.
Based on the phylogeny shown, choose the true statement about evolutionary relationships.
A. Oak is equally related to rose and pine. B. Fern is equally related to ginkgo and oak. C. Ginkgo is more closely related to oak than rose. D. Fern is more closely related to pine than to rose.