Once an Equilibrium Is Achieved,it Can Persist Indefinitely Because

question 147

Multiple Choice

Once an equilibrium is achieved,it can persist indefinitely because

• A) shocks that shift the demand curve or the supply curve cannot occur.
• B) shocks to the demand curve are always exactly offset by shocks to the supply curve.
• C) the government never intervenes in markets at equilibrium.
• D) in the absence of supply/demand shocks no one applies pressure to change the price.

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Definitions:

Natural Killer Cells

A type of lymphocyte (white blood cell) that plays a major role in the rejection of tumors and cells infected by viruses.

Interferons

A group of signaling proteins made and released by host cells in response to the presence of pathogens, such as viruses, bacteria, or tumor cells.

Antigen-Presenting Cells

Cells that process and present antigens to T-cells to initiate an immune response.

Major Histocompatibility Complex

Major Histocompatibility Complex is a set of genes that code for proteins on the cell surface, which help the immune system recognize foreign substances.