Use the Following to Answer Questions

question 24

Multiple Choice

Use the following to answer questions :
Suppose that a wild-type bacterium can synthesize substance D,but various mutant strains cannot.We know that substance D is synthesized from substance X in a pathway that involves three intermediate substances (A,B,and C) ,but we do not know the order of the steps in the pathway.Below is a table of four different mutant strains that have been tested for their ability to grow on the various substances.The plus sign means that the strain can grow on that substance;the negative sign means that the strain cannot grow on that substance.
-According to the data above,what is the most likely order of the pathway?

• A) A,B,C,D
• B) A,C,B,D
• C) B,A,C,D
• D) C,B,A,D
• E) C,A,B,D

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Definitions:

Elements

Fundamental components or constituents of a whole, often used in the context of physical science, psychology, or abstract systems.

Control Groups

Control Groups are used in experiments as a benchmark to measure the effect of a variable, ensuring that results are due to the intervention and not other factors.

Psychotherapy

A therapeutic treatment primarily involving talking and interaction between a therapist and a patient to heal and alleviate mental and emotional problems.

Ethical Concern

Considerations related to the morality and principles guiding decisions, often arising in situations where choices affect well-being or rights of individuals and communities.