How Does the Behavior of the Altered ErbB -Encoded Receptor

question 15

Multiple Choice

How does the behavior of the altered erbB -encoded receptor that is the product of the avian erythroblastosis virus differ from the wild type form of the receptor?

• A)The altered receptor behaves in the same way as the wild-type receptor.
• B)The altered receptor constitutively stimulates cell growth in the presence and absence of the growth factor.
• C)The altered receptor stimulates cell growth in the presence of the growth factor, but not in its absence.
• D)The altered receptor constitutively represses growth and cell proliferation in the presence and absence of the growth factor.
• E)The altered receptor stimulates cell growth in the absence of the growth factor, but not in its presence.

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