cell membranes - 2025 ACF Fall

Tossup

A constituent of these biological structures called DSPC is used in the formulation of several mRNA vaccines. These structures’ flippases (10[1])and (10[1])scramblases (10[13]-5[1])facilitate (10[3])transverse (10[5])movement (10[1])between (10[1])their (10[2])leaflets. (10[3])An early (10[1])sign of apoptosis (10[1])is the formation of blebs in (10[1])these structures. (10[4])The rigidity (10[3])of these structures (10[3])at (10[1])varying (10[2])temperatures (10[3])is controlled (10[2])by their cholesterol (10[1]-5[1])content. (10[15]-5[3])Proteins (10[1])in (10[2])these (10[4])structures (10[7])may be classified as “peripheral” (10[3])or (10[1])“integral.” (10[3]-5[1])The fluid (10[1])mosaic model (10[2]-5[1])of these (10[2])structures (10[5])describes (10[1])how (10[1])channel (10[2])proteins (10[1]-5[1])are embedded (10[1])in their (10[1])phospholipid bilayers. (10[5]-5[1])For 10 points, name these structures (10[1])that separate the (10[1])interior and exterior (10[1])of cells. ■END■ (10[10]0[2])

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>

= Average correct buzz position

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Buzzes

Player	Team	Opponent	Position	Value
March Delfin	UCSD A	UCLA A	19	10
Christian Humeniuk	McMaster A	Toronto A	20	10
Aaryan Sumesh	Berkeley Archer Queen	Berkeley Boss Bandit	21	10
Michael Xu	McMaster B	Guelph A	21	10
Snehan Saroch	Louisville A	Louisville B	21	10
Nathan Woolery	Louisville C	Michigan C	21	10
Sarah Dong	Michigan A	Michigan State C	21	10
Samuel Li	William & Mary A	UNC A	21	-5
Fern Fang	VCU A	Virginia Tech C	21	10
Liam Rojas	Virginia A	Virginia Tech A	21	10
Kelvin Ni	NYU A	George Mason B	21	10
Johnathan Ahdout	Princeton	Maryland A	21	10
Owen Ashbrook	Iowa A	Illinois Urbana	21	10
Owen Gibbs	Boston College B	Vermont A	21	10
Matthew Kohn	Williams A	Southern Connecticut State University A	21	10
Darren Kellis	Vanderbilt A	Chipola College	21	10
Yoyo Liu	British Columbia C	Arizona State A	22	10
Brayden Zhang	Vanderbilt B	Auburn C	22	10
Caleb Slusher	South Carolina A	Georgia Tech A	22	10
Victor Xu	Toronto B	Toronto D	23	10
Jason Thieu	Michigan State A	CWRU D	23	10
Bonham Buchannon	Louisville D	Ohio State D	23	10
Dustin Sanders	Chicago B	WashU Grizzlers	23	10
Judah Solomon	Imperial D	Imperial B	23	10
Sai Subramanian	CWRU A	Michigan D	24	10
Pace Klein	CWRU B	CWRU C	25	10
Emily Kadolph	Virginia Tech B	NCSU A	26	10
Rohit Chintala	Maryland B	Rutgers B	26	10
Hansen Jin	Berkeley Skeleton King	Stanford A	27	10
Jonathan Ho	Alberta B	Washington Masu	27	10
Juliette Flatau	Imperial A	Cambridge D	27	10
Aditya Koushik	Stanford B	Berkeley Mighty Miner	29	10
Eric Zhu	Cornell D	Binghamton A	32	10
Ethan Ririe	UCSD B	UCLA D	38	10
Andrew Nucci	UCLA B	Claremont A	40	10
Yun Loh	Penn	Vassar B	40	10
Ethan Ma	Illinois Blue	Illinois Canada	40	10
Mahathi Veluri	UConn A	Tufts A	40	10
Andrew McKenzie	Ohio State B	Pittsburgh	42	10
Henry L'Heureux	Minnesota	Michigan Tech	42	10
Amelia Rees	Durham A	Durham B	42	10
Alden Thompson	Carleton A	Ottawa C	45	10
Claire Wilson	Lehigh B	NYU C	45	10
Ian Saylor	Wisconsin A	Macalester	45	10
Advai Srinivasan	UC Irvine	UCLA E	46	10
Jeremy Kim	Toronto F	Toronto H	47	10
Alex Wong	Rutgers D	George Mason A	47	10
Jacob Goodson	Ohio State A	WVU B	48	10
Jaime Wang	Washington Atlantic	British Columbia A	48	10
Joanna Xiao	Georgia Tech B	Auburn A	48	10
Brendan Bridle	Queen's A	McMaster C	50	10
Niyanthi Yamunan	Georgia Tech E	Georgia A	50	10
Ethen Sun	Toronto C	Waterloo A	53	10
Miles Phillips	Florida Tech B	Florida State A	53	-5
Jackson Crickard	Claremont B	USC A	54	10
Galen Mueller	McGill B	McGill C	54	-5
Noah Fine	UNC D	UNC C	54	10
Elizabeth Ziberman	Stony Brook	George Mason C	54	10
Andrew Wu	Columbia A	Johns Hopkins	54	10
Cooper Morris	Columbia B	Rowan	54	-5
Misty Chen	Purdue C	Illinois Orange	54	10
Beckett Pursey	Purdue B	Indiana A	54	10
Samson Vickrey	Purdue D	Iowa B	54	10
Austin Tran	Rose-Hulman A	WashU Grolars	54	10
Salil Jain	Williams B	Amherst A	54	10
Steven Huang	Boston College A	Tufts B	54	-5
Keerthana Krishnan	Texas	Arizona State B	54	10
John Shelley	Clemson B	Tennessee B	54	10
David Xilbille	Georgia Tech C	Tennessee A	54	10
Advaith Jagannath	Cambridge C	Birmingham	54	10
Siheon Lee	Imperial C	Cambridge B	54	10
Hayley Morris	RIT B	ESF	54	10
Tristan Scarlett	Ottawa D	Ottawa B	55	10
Rohan Soni	UCLA F	UC Santa Barbara	56	10
Deeksha Easwar	Washington Sockeye	Boise State	56	10
Vivienne Ruemler	USC B	Claremont C	57	10
Charlie Ruff	McGill A	Ottawa A	57	10
Alice Zhang	Dartmouth A	Amherst B	57	10
Minh Nguyen	Cornell B	Binghamton B	57	10
Lucas Hall	Waterloo C	Toronto G	58	10
Emmet Ewing	Michigan State B	Ohio State C	58	10
Sophia Jagels	William & Mary B	Duke A	58	10
Drew Wetterlind	Iowa State	St. Thomas	58	10
Nikhil Nair	Boston University B	Brandeis Beethoven	58	10
Ayaan Jajodia	Dartmouth B	Boston University A	58	10
Aiden Shields	Clemson A	Alabama A	58	10
Daniel Lu	Washington Pink	Washington State	63	10
Coy Mier	Auburn B	Tennessee Tech	63	10
Laura Bullock	Sheffield A	Durham D	63	10
Magnolia Schnirman Barría	NYU B	Rutgers C	64	10
Juan Landaeta	Florida State A	Florida Tech B	65	10
Dashiell Helmer	Wisconsin C	Wisconsin B	65	10
Kaushik Jayaprabha	Dartmouth C	MIT B	65	10
Aman Sreshta	Clemson C	Montevallo	65	-5
James Bramley	Durham C	Edinburgh A	67	10
Valentina Chamandy	McGill E	Carleton B	69	10
Carly Hemani	JMU A	William & Mary C	69	-5
Gavin Chen	Vassar A	Rutgers A	69	10
Lorie Au-Yeung	UCSC	Berkeley Little Prince	71	10
Nitinkisor Rajesh Kumar	Edinburgh B	York	71	10
Audrey Nolan	NCSU B	Tusculum A	72	10
David Black	Illinois Champaign	William Woods University A	72	10
Nina Bindra	Southampton	Cambridge A	72	10
Jolie Yeh	Warwick	LSE	72	10
Jonah McGinley	Rochester	RIT A	72	10
Judah Garlic	Cornell C	Cornell A	73	10
Daniel Chen	Emory A	Georgia Tech F	74	10
Sean Gao	Toronto E	Waterloo B	75	10
Nishad Joshi	Kentucky	Michigan State D	75	10
Lauren Edgar	Lehigh A	Maryland C	76	-5
Devon Kumar	Tufts C	Brown A	76	10
Brandon Wiltse	Washington Chinook	Washington Coho	78	10
Harri Slaughter	Cardiff	Bristol	80	10
Peyton Legg	UCF A	Florida B	82	10
Katie Young	Liberty C	JMU B	82	-5
Jonathan Schnipper	Brandeis Mozart	Vermont B	82	10
Nathaniel Martin	Brandeis Bach	Williams C	82	10
Joyann Hua	British Columbia B	Alberta A	82	10
Edward Zhang	Vanderbilt C	Mississippi State A	82	10
Yishak Kelkay	ERAU Daytona A	South Florida A	88	10
Ahmed Azhari	Cambridge E	Oxford	91	10
Leighton Karpinia	Florida Tech A	Florida A	94	10
Charlotte Bauer	McGill C	McGill B	97	10
Saju Ramraj	Toronto I	Brock A	97	0
Ellie Wang	Brock A	Toronto I	97	10
Brendan Karg	JMU B	Liberty C	97	10
Joseph Cole	UNC A	William & Mary A	97	10
Jacob Schildkraut	William & Mary C	JMU A	97	10
Ben Spirtas	Maryland C	Lehigh A	97	10
John Shelly	Rowan	Columbia B	97	10
Reid Eichberg	Tufts B	Boston College A	97	10
Max Lopez	Montevallo	Clemson C	97	0
Isabel Dent	Sewanne	Georgia Tech D	97	10
Elliot Earley	Sheffield B	Edinburgh C	97	10
Emily Justak	Indiana B	Chicago A	110	0
Saswat Sasha Tripathi	Chicago A	Indiana B	110	10

Summary

Tournament	Edition	TUH	Conv. %	Neg %	Average Buzz
UK (North)	UK	5	100%	0%	68.00
UK (South)	UK	8	100%	0%	59.13
Northern California	US	4	100%	0%	37.00
Southern California	US	7	100%	0%	44.29
Eastern Canada (1)	US	5	100%	20%	64.60
Eastern Canada (2)	US	9	100%	0%	49.33
Florida	US	4	100%	25%	82.25
Great Lakes	US	11	100%	0%	34.64
Lower Mid-Atlantic	US	9	100%	33%	60.33
Upper Mid-Atlantic	US	12	100%	17%	52.92
Midwest	US	9	100%	0%	53.56
North	US	4	100%	0%	52.50
Northeast	US	12	100%	8%	59.25
Pacific	US	8	100%	0%	53.75
Southeast	US	13	92%	8%	53.75
Upstate NY	US	5	100%	0%	57.60