Which One of the Following Statements Regarding Positive and Negative

question 8

Multiple Choice

Which one of the following statements regarding positive and negative selection of T cells is NOT true?

• A)Thymic epithelial cells present self-peptide-MHC to developing T cells undergoing the selection process.
• B)T cells that do not recognize self-peptide-MHC die by neglect.
• C)T cells that bind too strongly to self-peptide-MHC die by Fas ligand-mediated apoptosis.
• D)During positive selection,developing T cells express higher levels of anti-apoptotic proteins such as bcl-2.
• E)A breakdown in negative selection may result in the development of some autoimmune diseases.

Grasp the conditions under which society benefits from changes in production levels and the interaction of price and marginal cost in competitive markets.

Identify the sources of market failure, including externalities, public goods, and imperfect information.

Discern the difference between efficiency and equity in economic systems.

Recognize the role and characteristics of public goods and the reasons behind government provision of such goods.

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Definitions:

United States

A country located in North America, consisting of 50 states, a federal district, five major self-governing territories, and various possessions.

LDC

An acronym for Less Developed Country, referring to a nation with a lower level of industrialization and lower living standards.

Malawi

A landlocked country in southeastern Africa known for its diverse landscapes ranging from the Great Rift Valley to highlands and extensive lake Malawi.

Taiwan

An island in East Asia, known for its rapid economic growth since the latter half of the 20th century and its vibrant democracy.