RNAi probably evolved as a mechanism to:

A. aid molecular biologists to experimentally knockdown gene expression.
B. catalyze RNA-dependent DNA synthesis.
C. suppress infection by RNA viruses.
D. generate cell-specificity for certain mRNAs.


C

Biology & Microbiology

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Cells require which of the following to form cilia or flagella?

A) tubulin B) laminin C) actin D) intermediate filaments E) secretory vesicles

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The Pax6 gene, responsible for initiating lens formation in mice, can be inserted into fruit flies and 

A. causes cancer of the brain as it tries to initiate a mammalian eye. B. forms a partial eye since it is somewhat similar to the Pax7 gene of fruit flies. C. will have no effect, indicating the extreme differences in lens formation. D. can be expressed to initiate formation of an eye on the fruit fly's leg. E. it is lethal to them.

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Which of the following is a purine?

A) guanine B) cytosine C) thymine D) uracil E) cysteine

Biology & Microbiology

Lysozyme is effective against nearly all disease causing agents

Indicate whether the statement is true or false

Biology & Microbiology