Which of the following processes destroys RNA molecules in a cell if they have a sequence complementary to an introduced double-stranded RNA?

#Question id: 2666

#SCPH05 I Biotechnology

A cell does not want to waste energy synthesizing the amino acid arginine if arginine is present in its diet. Therefore, when arginine is present, it activates a repressor protein to prevent transcription of genes that code for enzyme to make arginine. This is an example of what type of regulation?

#Question id: 2666

#SCPH06 I Botany

A cell does not want to waste energy synthesizing the amino acid arginine if arginine is present in its diet. Therefore, when arginine is present, it activates a repressor protein to prevent transcription of genes that code for enzyme to make arginine. This is an example of what type of regulation?

#Question id: 2667

#SCPH05 I Biotechnology

A regulatory protein that attracts RNA polymerase to its promoter is an example of what type of regulation?

#Question id: 2667

#SCPH06 I Botany

A regulatory protein that attracts RNA polymerase to its promoter is an example of what type of regulation?

#Question id: 2668

#SCPH05 I Biotechnology

The toxic shock syndrome toxin is produced by some Salmonella species when there is not sufficient iron present. When iron is present, it prevents transcription of the TSS-toxin gene. Iron therefore serves as __________.

#Question id: 2668

#SCPH06 I Botany

The toxic shock syndrome toxin is produced by some Salmonella species when there is not sufficient iron present. When iron is present, it prevents transcription of the TSS-toxin gene. Iron therefore serves as __________.