Question
The non-invasive extraction of this antibody and its easy accessibility within chicken eggs underlies its potential as a widespread prophylactic that does not activate the mammalian complement system. For 10 points each:
[10h] Name this evolutionary ancestor of IgG and IgE, which, unlike the former, does not bind to proteins A or G. Avians produce IgM, IgA, and this antibody that is also dominant in the blood of lungfish and reptiles.
ANSWER: IgY [or immunoglobulin Y]
[10e] Unlike IgG, IgY does not readily bind to mammalian receptors named for this region of antibodies. A truncated form of IgY in ducks lacks this region of antibodies that is contrasted with the antigen-specific Fab region.
ANSWER: Fc [accept Fc receptors; accept fragmentable crystallizable region]
[10m] That incompatibility with mammalian Fc receptors is due to IgY’s lack of this region. IgG and IgA contain this flexible, heavy-chain region that connects the Fc and Fab regions.
ANSWER: hinge region
<Kevin Thomas, Biology>
Summary
| 2023 Chicago Open | 08/05/2023 | Y | 9 | 7.78 | 44% | 33% | 0% |
Data
| I would prefer not to | Romanos IV Diogenes’ Macaroni Grill | 0 | 10 | 10 | 20 |
| remembrance of lost time | Quasicrystal Silence | 0 | 0 | 0 | 0 |
| Saint Peter Andre 3000 | Hang et al., Robert Browning | 0 | 10 | 0 | 10 |
| Curse you, Periplus the Platypus! | Teach Us to Outgrow Our Ladness | 0 | 10 | 10 | 20 |
| Team Name Think Detail | Don't be Afraid, the Clown's Afraid Too | 0 | 0 | 0 | 0 |
| I prefer really not to speak. If I speak I’m in big trouble | The Canadians | 0 | 0 | 0 | 0 |
| The Plague (anime)" was redirected to: "Oran High School Host Club | The Catastrophic Implosion of Packet Sub | 0 | 10 | 0 | 10 |
| BHSU | wave2: trimming membership codes 9655377758gp | 0 | 0 | 10 | 10 |
| Evans Hall destruction awaiters | [moderator voice] yes that is so tenpointscore! is your team feeling bonuspilled? | 0 | 0 | 0 | 0 |