Use the Following to Answer Questions

question 10

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.
-Suppose that another strain (strain 5) can grow on substance B but cannot grow on substance C.What can we infer from this observation?

• A) Strain 5 cannot grow on substance A.
• B) Strain 5 cannot grow on substance D.
• C) Strain 5 has a defect in the enzyme that converts substance B to substance C.
• D) Strain 5 has a defect in the enzyme that converts substance B to substance D.
• E) Strain 5 has a defect in the enzyme that converts substance C to substance B.

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Definitions:

Neuroscience Perspective

takes into account the brain's structure, function, development, genetics, and biochemistry to understand behavior and cognitive functions.

Behavior

Refers to observable actions or responses of an organism, often in response to external stimuli.

Blood Chemistry

An analysis of blood samples to measure the levels of certain substances in the blood, used to evaluate general health or diagnose a variety of conditions.

Cognitive Perspective

An approach in psychology that emphasizes internal mental processes, including how people perceive, think, and solve problems.