Phospholipids Are Made by Integral ER Membrane Enzymes Whose Active

question 92

Multiple Choice

Phospholipids are made by integral ER membrane enzymes whose active sites face the cytosol and they are inserted into the outer (cytoplasmic) leaflet of the ER membrane. How then do lipids destined for the luminal leaflet of the ER membrane get there?

• A)They diffuse freely into the luminal leaflet.
• B)There are enzymes called flippases that flip these lipids into the opposite leaflet later.
• C)They are disassembled on the cytoplasmic side and reassembled on the luminal side.
• D)They move to the cytoplasmic leaflet by osmosis.
• E)There are enzymes called translocases that flip these lipids into the opposite leaflet later.

Identify and explain externalities, particularly in the context of basic research.

Apply the concept of goods classification to specific examples involving national defense, road congestion, and innovative inventions.

Understand the economic principles surrounding the commercial value of resources and their impact on conservation.

Describe the four types of goods and differentiate between them.

---

Definitions:

Environmental Quality

The state or condition of the environment, including factors like air and water purity, noise levels, and the health of ecosystems.

Social Audit

A formal review of a company's endeavors, procedures, and code of conduct regarding social responsibility and its contribution to society's well-being.

Triple Bottom Line

A sustainability framework that measures a company's success based on three Ps: People, Planet, and Profit, highlighting the importance of social and environmental responsibility.

Social Responsibility

Social responsibility is the commitment of a business to contribute to the well-being of communities and the environment, beyond what is legally required.