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Chapter 8: Problem 4

In bacteria, amino acid starvation is associated with the production of guanosine tetraphosphate and guanosine pentaphosphate. This situation is referred to as A. attenuation. B. corepression. C. repression. D. self-regulation. E. stringent response.

Short Answer

Expert verified
Answer: E. stringent response.

Step by step solution

01

Review each term's definition

In order to find the correct answer, we will review the definitions of the given options: A. Attenuation is a regulatory mechanism in which bacterial mRNA transcription terminates early, so no protein synthesis occurs. B. Corepression refers to the process where a corepressor (protein) assists in the repression of gene transcription. C. Repression is a regulatory mechanism where a repressor protein prevents or reduces gene transcription. D. Self-regulation refers to a regulatory mechanism where a molecule or protein produced by a gene product negatively regulates its own production directly or indirectly. E. Stringent response is a stress response in bacteria that occurs when bacteria experience nutrient limitations like amino acid starvation, which leads to the production of guanosine tetraphosphate (ppGpp) and guanosine pentaphosphate (pppGpp).
02

Identifying the correct term

Based on the definitions provided in Step 1, we can see that the situation described in the exercise matches with option E, stringent response. The other terms are related to gene regulation, but they do not specifically mention the production of guanosine tetraphosphate and guanosine pentaphosphate under amino acid starvation.
03

Final Answer

The correct answer is: E. stringent response.

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Most popular questions from this chapter

In eukaryotic transcription by RNA polymerase II, formation of a preinitiation complex A. begins with the binding of a protein (TBP) to the TATA box of the promoter. B. involves the ordered addition of several transcription factors and the RNA polymerase. C. allows an ATP-dependent opening of the two strands of DNA. D. requires that the C-terminal domain of RNA polymerase II not be phosphorylated. E. all of the above.

The problem of pathogenic bacteria becoming resistant to a large number of antibiotics is a serious public health concern. A bacterial strain in a paticnt being treated with one antibiotic may suddenly become resistant not only to that antibiotic but to others as well even though it has not been exposed to the other antibiotics. This occurs when the bacteria acquire a plasmid from another strain that contains several different transposons. All of the following phrases describe transposons except A. a means for the permanent incorporation of antibiotic resistance into the bacterial chromosome. B. contain short inverted terminal repeat sequences. C. code for an enzyme that synthesizes guanosine tetraphosphate and guanosine pentaphosphate, which inhibit further transposition. D. include at least one gene that codes for a transposase. E. contain varying numbers of genes.

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