Which embryonic tissue is incorrectly associated with its derivative?

a. skin; ectoderm
b. nervous system; ectoderm
c. liver; endoderm
d. circulatory system; mesoderm
e. brain; mesoderm


ANSWER: e

Biology & Microbiology

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Prions ____

a. are more complex than viruses b. have large DNA genomes c. cause neurodegenerative disorders in mammals d. infect plant cells e. encode their own polymerases for nucleic acid replication

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Beta amyloid plaques are most often seen in persons suffering from ____

a. Parkinson's disease b. Alzheimer's disease c. heart disease d. muscular dystrophy e. multiple sclerosis

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Against what protein is the treatment for metastatic colon cancer Vectibix directed?

a) p53 b) VEGF c) pRB d) Her2 e) the EGF receptor

Biology & Microbiology

A cladogram is the name of a taxonomic category into which organisms are placed when their evolutionary relationships to each other are being investigated.

a. true b. false

Biology & Microbiology