Usually,bacteria Only Make Tryptophan When Tryptophan Is Absent or Available

question 6

Multiple Choice

Usually,bacteria only make tryptophan when tryptophan is absent or available in low concentration.However,a particular bacterial mutation makes tryptophan all the time whether or not tryptophan is present.What could explain this phenotype?

• A)the terminator hairpin is unable to form
• B)trpD is mutated
• C)trpA is mutated
• D)the antiterminator hairpin is unable to form
• E)trpE is mutated

---

Definitions:

Carl Rogers

An influential American psychologist who founded client-centered therapy and emphasized the importance of the self and unconditional positive regard.

Trait Theories

Psychological perspectives that focus on identifying, describing, and measuring individual differences in personality through traits.

Primary Appraisals

The initial evaluation process in stress theory, determining whether an event is threatening, challenging, or harmless.

Secondary Appraisals

The evaluation of one's ability to cope with the initial primary stressor, reassessing its significance and potential outcomes.