The Variable Lymphocyte Receptors (VLRs) of Lampreys Represent a Highly

question 24

Multiple Choice

The variable lymphocyte receptors (VLRs) of lampreys represent a highly diverse set of proteins with structural similarity to the mammalian Toll-like receptors. Yet the VLRs and the lymphocytes that produce them are thought to be components of the lamprey's adaptive immune system. This is because:

• A) The VLRs are highly diverse and have been shown to bind to pathogens.
• B) Both membrane-bound and secreted forms of VLRs are found in the lampreys.
• C) VLR coding genes are formed by DNA rearrangement events.
• D) VLRs are clonally distributed such that each lymphocyte expresses only one form of VLR.
• E) VLR gene rearrangements occur by a process similar to gene conversion.

---

Definitions:

Time-starved Mothers

Mothers who juggle multiple responsibilities and have limited free time, often leading to high demand for convenience-oriented services and products.

Active Lifestyles

A way of life that integrates physical activity into daily routines, aiming to improve one’s health, fitness, and overall wellbeing.

Multichannel Marketer

A strategy that uses multiple channels to reach and sell to customers, including online, in-store, mobile, catalog, and more.

Clinique Division

A specific segment of Estée Lauder Companies focused on manufacturing and marketing skincare, cosmetics, toiletries, and fragrances.