Round 6: Tossup 12

A constituent of these biological structures called DSPC is used in the formulation of several mRNA vaccines. These structures’ flippases and scramblases facilitate transverse (10[1])movement between their leaflets. (10[1])An early sign of apoptosis is the formation of blebs in these structures. The rigidity of these structures at varying temperatures is controlled by their cholesterol content. (10[2])Proteins in these structures may be classified as “peripheral” or “integral.” The fluid mosaic model of these structures (10[2])describes how channel proteins are embedded in their (10[1])phospholipid bilayers. For 10 points, name these structures that separate the (10[1])interior and exterior of cells. ■END■

ANSWER: cell membranes [or plasma membranes or cytoplasmic membranes or cellular membranes; accept plasmalemma; accept integral membrane proteins or peripheral membrane proteins; prompt on lipid bilayers or lipid rafts or lipid nanoparticles; reject “cell walls” or “cytoplasm”; reject “nuclear membranes”]
<Editors, Biology> | Packet H
= Average correct buzz position

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Buzzes


Summary

TournamentEditionTUHConv. %Neg %Average Buzz
UK (North)UK5100%0%68.00
UK (South)UK8100%0%59.13
Northern CaliforniaUS4100%0%37.00
Southern CaliforniaUS7100%0%44.29
Eastern Canada (1)US5100%20%64.60
Eastern Canada (2)US9100%0%49.33
FloridaUS4100%25%82.25
Great LakesUS11100%0%34.64
Lower Mid-AtlanticUS9100%33%60.33
Upper Mid-AtlanticUS12100%17%52.92
MidwestUS9100%0%53.56
NorthUS4100%0%52.50
NortheastUS12100%8%59.25
PacificUS8100%0%53.75
South CentralUS7100%14%62.14
SoutheastUS1392%8%53.75
Upstate NYUS5100%0%57.60