Cholera Toxin Can Make You Sick Through Overactivation of a Gαs

question 25

Multiple Choice

Cholera toxin can make you sick through overactivation of a Gαs pathway even if your body stops making the ligand associated with activation of the pathway.Knowing this,which of the following CANNOT be true about cholera toxin?

• A)It chemically modifies the Gαs protein.
• B)Cholera toxin activates a ligand-activated G protein-coupled receptor.
• C)It prevents hydrolysis of bound GTP to GDP.
• D)It leads to continuous activation of adenylyl cyclase.

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Definitions:

Green Plants

Organisms that perform photosynthesis, using sunlight, carbon dioxide, and water to produce oxygen and carbohydrates, playing a crucial role in Earth's ecosystems.

Inverted Energy Pyramid

A reversal of the typical energy flow seen in food chains, where higher trophic levels have greater biomass or energy than the lower levels, typically occurring in aquatic ecosystems.

Ecosystem

A community of living organisms in conjunction with the nonliving components of their environment, interacting as a system.

Producers

Organisms, primarily plants and algae, that produce organic compounds from inorganic substances through photosynthesis, forming the base of the food chain.