Eukaryotes are able to express different proteins over time or at certain points in the life cycle by using ________.

A. mediators
B. riboswitches
C. silencers
D. siRNAs


Answer: B

Biology & Microbiology

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__________ are the structural and functional units of the nervous system

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Genes are arranged in threadlike bodies called chromosomes

Indicate whether the statement is true or false

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How were nitroglycerine's therapeutic benefits discovered?

a) the fact that dynamite factory workers with heart conditions had less angina on days that they worked b) by reading the literature c) through careful drug testing d) the fact that dynamite factory workers with heart conditions had more angina on days that they worked e) by prayer

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Biofilm formations requires production of materials such as glycocalyx

a. true b. false

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