RNAi
A. is the form of mRNA that initiates translation.
B.
uses short pieces of single-stranded RNA to direct the degradation of specific RNA transcripts.
C. is a mechanism of genetic regulation found in eukaryotes.
D. is any chemical that inhibits transcription.
E.
uses short pieces of single-stranded RNA to direct the degradation of specific RNA transcripts AND is a mechanism of genetic regulation found in eukaryotes.
E
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Craig Venter and Claire Fraser are working to create a "minimal organism.". They are starting with Mycoplasma genitalium, a bacterium that has 517 genes. By disabling its genes one at a time, they discovered that 265–350 of them code for essential proteins. The scientists are synthesizing the essential genes and inserting them, one by one, into an engineered cell consisting only of a plasma
membrane and cytoplasm. They want to see how few genes it takes to build a new life form. What properties would such a cell have to exhibit for you to conclude that it was alive? What will be an ideal response?
Four of the following are true about water molds. Which one is the exception?
a. Water mold is responsible for the Irish potato famine. b. Some species are aquatic parasites. c. Most act as decomposers. d. Their filaments are composed of haploid cells. e. They are heterotrophs.
Direct-to-consumer genetic testing is available from several companies
a. True b. False
Solutions are always comprised of
A. solvents and solute. B. liquids and solids. C. water and salts. D. compounds and ions.