Which of the Following Statements Best Describes the Mechanism for Glucagon's

question 54

Multiple Choice

Which of the following statements best describes the mechanism for glucagon's control of metabolism?

• A) glucagon allosterically regulates many enzymes directly.
• B) glucagon decreases the synthesis of glycolytic enzymes.
• C) glucagon stimulates a cAMP mediated cascade which results in the phosphorylation of one or more target enzymes.
• D) glucagon decreases membrane permeability to glucose.
• E) glucagon decreases membrane permeability to fatty acids.

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Definitions:

Basement Membrane

A thin layer of extracellular matrix that separates epithelial or endothelial cells from the underlying connective tissue, providing support and regulation.

Hemidesmosomes

Specialized cell structures involved in the attachment of a cell to the extracellular matrix or basement membrane.

Adhesion Belt

A structure within epithelial cells, made of cadherin proteins, that helps in cell-cell adhesion, maintaining the structural integrity of tissues.

Contraction

The process in which muscle fibers shorten in length, resulting in movement or force generation.