Which Mechanism Does NOT Regulate HMG-CoA Reductase Activity

question 40

Multiple Choice

Which mechanism does NOT regulate HMG-CoA reductase activity?

• A)Low [cholesterol] increases mRNA for HMG-CoA reductase.
• B)High [cholesterol] increases half-life for HMG-CoA reductase.
• C)High [cholesterol] results in lower mRNA for HMG-CoA reductase.
• D)Phosphorylation by cAMP cascade inactivates HMG-CoA reductase.

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Definitions:

Atmospheric CO₂

The concentration of carbon dioxide in Earth's atmosphere, a crucial factor influencing climate change and global temperatures through the greenhouse effect.

Keystone Species

A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Keystone Species

An organism that other species in an ecosystem significantly rely on, and if it were eliminated, the ecosystem would undergo major changes.

Sea Stars

Marine invertebrates known for their star shape and ability to regenerate limbs, part of the echinoderm family.