The petals of a flower make up the

a. corolla.
b. filament.
c. ovule.
d. calyx.
e. receptacle.


A

Biology & Microbiology

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Where does mRNA/tRNA codon-anticodon recognition take place?

A. 30S B. 40S C. 50S D. The surface between the two ribosomal subunits

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Mutations in myosin VII result in an autosomal recessive disorder called ________ , which is characterized by congenital profound hearing loss, problems in the vestibular system, and retinitis pigmentosum.

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

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Communication and integration of responses between simultaneously occurring cell signaling

pathways is called ________.

a. mutualistic responding b. effector coordination c. cross-talk d. amplification e. signal transduction

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The membrane attack stage of the complement cascade involves

A. initiation of the cascade. B. C1q binding to surface receptors on a membrane. C. a ring-shaped protein digesting holes in bacterial cell membranes and virus envelopes. D. the production of inflammatory cytokines. E. the cleaving of C3 to yield C3a and C3b.

Biology & Microbiology