What is the difference between Ras and the G proteins bound to G protein coupled receptors (GPCRs)?
A. Ras is a small G protein and the G proteins bound to GPCRs are not small G proteins.
B. Ras can activate different effector molecules and the G proteins bound to GPCRs cannot activate different effector molecules.
C. Ras is a second messenger and the G proteins bound to GPCRs are not second messengers.
D. Ras is an enzyme and the G proteins bound to GPCRs are not enzymes.
Answer: A
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Serratia marcescens bacteria has a gene that regulates red pigment production by cells. A student inoculates two nutrient agar plates of Serratia and incubates one at 25oC and the other at 37oC. Following incubation, the student observes that colonies on the 25oC plate are red while those on the 37oC plate are nonpigmented. Which of the following statements is a logical conclusion based on these results?
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________ states that depressed individuals are characterized by a negative cognitive tried, which shows their tendency to have negative views of themselves, their world, and their future.
Fill in the blank(s) with the appropriate word(s).
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