Macrophages Express Multiple Types of Receptors on Their Surface That

question 2

Multiple Choice

Macrophages express multiple types of receptors on their surface that stimulate phagocytosis of microbes, leading to pathogen internalization and destruction. Many of these receptors, such as Dectin-1, rely on direct recognition of a PAMP on the pathogen surface. However, some receptors that stimulate phagocytosis rely on soluble factors (not associated with the phagocyte membrane) to identify and mark the pathogen for uptake by the phagocyte. One such receptor is:

• A) The mannose receptor
• B) The class A scavenger receptor
• C) The lipid receptor
• D) The macrophage C-type lectin receptor
• E) The complement receptor

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Definitions:

Marsupials

A group of mammals characterized by giving birth to relatively undeveloped offspring that typically complete their development in an external pouch.

Opossum

is a type of marsupial found in the Americas, known for playing dead as a defense mechanism.

Monotremes

Egg-laying mammals such as the duck-billed platypus of Australia.

Oviparous

Referring to organisms that lay eggs, with embryos developing and hatching outside the mother's body.